$HTGC
Hercules Capital, Inc. Stock $htgc

$htgc Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000128078423000008 Filed on November 02, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue	$122.6M	$110.3M
YoY Change	22.37%	120.67%
Cost Of Revenue	$19.91M	$19.00M
YoY Change	10.7%	13.9%
Gross Profit	$102.7M	$97.80M
YoY Change	24.93%	44.79%
Gross Profit Margin	83.76%	88.64%
Selling, General & Admin	$18.24M	$23.40M
YoY Change	-17.24%	20.57%
% of Gross Profit	17.76%	23.93%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	-$10.00K	$100.0K
YoY Change	-122.73%	100.0%
% of Gross Profit	-0.01%	0.1%
Operating Expenses	$16.65M	$42.37M
YoY Change	-16.98%	17.39%
Operating Profit	$86.04M	$55.43M
YoY Change	38.45%	76.22%
Interest Expense	$34.13M	$18.95M
YoY Change	8765.97%	13.61%
% of Operating Profit	39.67%	34.19%
Other Income/Expense, Net
YoY Change
Pretax Income	$120.2M	$28.00M
YoY Change	92.18%	-47.37%
Income Tax
% Of Pretax Income
Net Earnings	$119.1M	$27.97M
YoY Change	91.97%	-47.43%
Net Earnings / Revenue	97.14%	25.35%
Basic Earnings Per Share		$0.19
Diluted Earnings Per Share	$0.78	$0.19
COMMON SHARES
Basic Shares Outstanding	151.1M shares	144.6M
Diluted Shares Outstanding		147.1M shares

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$98.90M	$32.00M
YoY Change	526.06%	-43.92%
Cash & Equivalents	$98.90M	$31.98M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$131.6M	$64.10M
YoY Change	177.26%	-22.36%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.787M	$5.100M
YoY Change	-3.99%	-10.08%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$3.248B	$3.261B
YoY Change	9.58%	15.42%
Other Assets	$17.11M	$5.300M
YoY Change	69.8%	-36.5%
Total Long-Term Assets	$3.285B	$3.272B
YoY Change	10.19%	15.14%
TOTAL ASSETS
Total Short-Term Assets	$131.6M	$64.10M
Total Long-Term Assets	$3.285B	$3.272B
Total Assets	$3.417B	$3.336B
YoY Change	12.81%	14.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$54.16M	$46.30M
YoY Change	13.92%	34.23%
Accrued Expenses	$5.195M	$5.300M
YoY Change	-5.65%	-13.0%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$59.35M	$51.60M
YoY Change	11.89%	27.14%
LONG-TERM LIABILITIES
Long-Term Debt	$1.555B	$1.633B
YoY Change	-1.24%	7.33%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$1.555B	$1.633B
YoY Change	-1.24%	7.33%
TOTAL LIABILITIES
Total Short-Term Liabilities	$59.35M	$51.60M
Total Long-Term Liabilities	$1.555B	$1.633B
Total Liabilities	$1.614B	$1.684B
YoY Change	-0.81%	7.85%
SHAREHOLDERS EQUITY
Retained Earnings	$140.0M	$72.53M
YoY Change	133.71%
Common Stock	$158.0K	$152.0K
YoY Change	17.91%	16.03%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.803B	$1.652B
YoY Change
Total Liabilities & Shareholders Equity	$3.417B	$3.336B
YoY Change	12.81%	14.08%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	$119.1M	$27.97M
YoY Change	91.97%	-47.43%
Depreciation, Depletion And Amortization	-$10.00K	$100.0K
YoY Change	-122.73%	100.0%
Cash From Operating Activities	$130.9M	-$115.4M
YoY Change	-301.61%	117.02%
INVESTING ACTIVITIES
Capital Expenditures	$487.0K	$0.00
YoY Change	1639.29%	-100.0%
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities	-$487.0K	$0.00
YoY Change	1639.29%	-100.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-51.55M	78.50M
YoY Change	-302.88%	-94678.31%
NET CHANGE
Cash From Operating Activities	130.9M	-115.4M
Cash From Investing Activities	-487.0K	0.000
Cash From Financing Activities	-51.55M	78.50M
Net Change In Cash	78.84M	-36.90M
YoY Change	-299.41%	-30.73%
FREE CASH FLOW
Cash From Operating Activities	$130.9M	-$115.4M
Capital Expenditures	$487.0K	$0.00
Free Cash Flow	$130.4M	-$115.4M
YoY Change	-300.77%	117.07%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	319222000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	212391000	usd
	us-gaap	Fee Income FeeIncome	18843000	usd
	us-gaap	Fee Income FeeIncome	9110000	usd
	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	338065000	usd
	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	221501000	usd
	us-gaap	Interest Expense Debt InterestExpenseDebt	50237000	usd
	us-gaap	Interest Expense Debt InterestExpenseDebt	38844000	usd
	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	7317000	usd
	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	5517000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	13868000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12504000	usd
	us-gaap	Investment Income Operating Tax Expense Benefit InvestmentIncomeOperatingTaxExpenseBenefit	5249000	usd
	us-gaap	Investment Income Operating Tax Expense Benefit InvestmentIncomeOperatingTaxExpenseBenefit	4135000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	41062000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	30357000	usd
	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	9848000	usd
	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	10559000	usd
	htgc	Employee Compensation EmployeeCompensation	50910000	usd
	htgc	Employee Compensation EmployeeCompensation	40916000	usd
	us-gaap	Operating Expenses OperatingExpenses	127581000	usd
	us-gaap	Operating Expenses OperatingExpenses	101916000	usd
	htgc	Expenses Allocated To Adviser Subsidiary1 ExpensesAllocatedToAdviserSubsidiary1	7509000	usd
	htgc	Expenses Allocated To Adviser Subsidiary1 ExpensesAllocatedToAdviserSubsidiary1	6335000	usd
CY2023Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	675000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	1057000	usd
CY2023Q3	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	72534000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3007000	usd
	htgc	Operating Expenses Net OperatingExpensesNet	120072000	usd
	htgc	Operating Expenses Net OperatingExpensesNet	95581000	usd
	us-gaap	Net Investment Income NetInvestmentIncome	217993000	usd
	us-gaap	Net Investment Income NetInvestmentIncome	125920000	usd
CY2023Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3686000	usd
CY2023Q3	htgc	Realized Investment Gains Loss And Gain Loss On Extinguishment Of Debt RealizedInvestmentGainsLossAndGainLossOnExtinguishmentOfDebt	-2587000	usd
CY2022Q3	htgc	Realized Investment Gains Loss And Gain Loss On Extinguishment Of Debt RealizedInvestmentGainsLossAndGainLossOnExtinguishmentOfDebt	5289000	usd
	htgc	Realized Investment Gains Loss And Gain Loss On Extinguishment Of Debt RealizedInvestmentGainsLossAndGainLossOnExtinguishmentOfDebt	5590000	usd
	htgc	Realized Investment Gains Loss And Gain Loss On Extinguishment Of Debt RealizedInvestmentGainsLossAndGainLossOnExtinguishmentOfDebt	775000	usd
CY2023Q3	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-46240000	usd
CY2022Q3	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-2089000	usd
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-6277000	usd
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-87147000	usd
CY2023Q3	us-gaap	Investment Company Realized And Unrealized Gain Loss On Investment And Foreign Currency InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency	-48827000	usd
CY2022Q3	us-gaap	Investment Company Realized And Unrealized Gain Loss On Investment And Foreign Currency InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency	3200000	usd
	us-gaap	Investment Company Realized And Unrealized Gain Loss On Investment And Foreign Currency InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency	-687000	usd
	us-gaap	Investment Company Realized And Unrealized Gain Loss On Investment And Foreign Currency InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency	-86372000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	27967000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	53202000	usd
	us-gaap	Net Income Loss NetIncomeLoss	217306000	usd
	us-gaap	Net Income Loss NetIncomeLoss	39548000	usd
CY2023Q3	us-gaap	Investment Company Investment Income Loss Per Share InvestmentCompanyInvestmentIncomeLossPerShare	0.52
CY2022Q3	us-gaap	Investment Company Investment Income Loss Per Share InvestmentCompanyInvestmentIncomeLossPerShare	0.39
	us-gaap	Investment Company Investment Income Loss Per Share InvestmentCompanyInvestmentIncomeLossPerShare	1.53
	us-gaap	Investment Company Investment Income Loss Per Share InvestmentCompanyInvestmentIncomeLossPerShare	1.01
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.52
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.41
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.51
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146899000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	127484000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141223000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123379000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	147110000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129334000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142126000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	124767000	shares
CY2023Q3	us-gaap	Investment Company Distribution To Shareholders Per Share InvestmentCompanyDistributionToShareholdersPerShare	0.48
CY2022Q3	us-gaap	Investment Company Distribution To Shareholders Per Share InvestmentCompanyDistributionToShareholdersPerShare	0.50
	us-gaap	Investment Company Distribution To Shareholders Per Share InvestmentCompanyDistributionToShareholdersPerShare	1.42
	us-gaap	Investment Company Distribution To Shareholders Per Share InvestmentCompanyDistributionToShareholdersPerShare	1.46
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	1585510000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	27967000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	107562000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	163000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1652057000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1401459000	usd
	us-gaap	Net Income Loss NetIncomeLoss	217306000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	238310000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	378000	usd
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	12503000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2936000	usd
	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	204687000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8858000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1652057000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	31000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	81000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	1327740000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	53202000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	42854000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	266000	usd
CY2022Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	838000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	949000	usd
CY2022Q3	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	63950000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2495000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	1362718000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1308547000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	189958000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	720000	usd
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	5458000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2895000	usd
	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	usd
	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	181825000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8333000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	1362718000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	36000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	113000	usd
	us-gaap	Net Income Loss NetIncomeLoss	217306000	usd
	us-gaap	Net Income Loss NetIncomeLoss	39548000	usd
	us-gaap	Payments For Purchase Of Investment Operating Activity PaymentsForPurchaseOfInvestmentOperatingActivity	1291627000	usd
	us-gaap	Payments For Purchase Of Investment Operating Activity PaymentsForPurchaseOfInvestmentOperatingActivity	1097812000	usd
	htgc	Funding Assigned To Adviser Funds FundingAssignedToAdviserFunds	-294468000	usd
	htgc	Funding Assigned To Adviser Funds FundingAssignedToAdviserFunds	-247848000	usd
	us-gaap	Proceeds From Disposition Of Investment Operating Activity ProceedsFromDispositionOfInvestmentOperatingActivity	685103000	usd
	us-gaap	Proceeds From Disposition Of Investment Operating Activity ProceedsFromDispositionOfInvestmentOperatingActivity	378109000	usd
	htgc	Proceeds From Disposition Of Investment Equity And Warrants Investments Operating Activity ProceedsFromDispositionOfInvestmentEquityAndWarrantsInvestmentsOperatingActivity	34877000	usd
	htgc	Proceeds From Disposition Of Investment Equity And Warrants Investments Operating Activity ProceedsFromDispositionOfInvestmentEquityAndWarrantsInvestmentsOperatingActivity	14303000	usd
	us-gaap	Unrealized Gain Loss Investment Derivative And Foreign Currency Transaction Price Change Operating Before Tax UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax	-6277000	usd
	us-gaap	Unrealized Gain Loss Investment Derivative And Foreign Currency Transaction Price Change Operating Before Tax UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax	-87147000	usd
	us-gaap	Realized Gain Loss Investment And Derivative Operating After Tax RealizedGainLossInvestmentAndDerivativeOperatingAfterTax	5590000	usd
	us-gaap	Realized Gain Loss Investment And Derivative Operating After Tax RealizedGainLossInvestmentAndDerivativeOperatingAfterTax	4461000	usd
	us-gaap	Interest Income Operating Paid In Kind InterestIncomeOperatingPaidInKind	17999000	usd
	us-gaap	Interest Income Operating Paid In Kind InterestIncomeOperatingPaidInKind	14888000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	5344000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	2996000	usd
	htgc	Accretion Amortization Of Discounts And Premiums Investments Convertible Notes AccretionAmortizationOfDiscountsAndPremiumsInvestmentsConvertibleNotes	0	usd
	htgc	Accretion Amortization Of Discounts And Premiums Investments Convertible Notes AccretionAmortizationOfDiscountsAndPremiumsInvestmentsConvertibleNotes	-112000	usd
	htgc	Accretion Of Loan Exit Fees AccretionOfLoanExitFees	14140000	usd
	htgc	Accretion Of Loan Exit Fees AccretionOfLoanExitFees	18398000	usd
	htgc	Change In Loan Income Net Of Collection ChangeInLoanIncomeNetOfCollection	15349000	usd
	htgc	Change In Loan Income Net Of Collection ChangeInLoanIncomeNetOfCollection	19412000	usd
	htgc	Unearned Fees Related To Unfunded Commitments UnearnedFeesRelatedToUnfundedCommitments	-279000	usd
	htgc	Unearned Fees Related To Unfunded Commitments UnearnedFeesRelatedToUnfundedCommitments	3378000	usd
	htgc	Non Cash Realized Loss Extinguishment Debt NonCashRealizedLossExtinguishmentDebt	0	usd
	htgc	Non Cash Realized Loss Extinguishment Debt NonCashRealizedLossExtinguishmentDebt	364000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5227000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	4051000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	167000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	160000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	8858000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	8333000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	366000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	8039000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-6533000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1196000	usd
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1419000	usd
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-14856000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-62599000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-359881000	usd
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	390000	usd
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	86000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-390000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-86000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	243609000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	192011000	usd
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	5299000	usd
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2053000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12125000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4738000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	201751000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	178930000	usd
	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	533000000	usd
	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1169237000	usd
	us-gaap	Repayments Of Debt RepaymentsOfDebt	478000000	usd
	us-gaap	Repayments Of Debt RepaymentsOfDebt	878198000	usd
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	usd
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	6581000	usd
	htgc	Payment Of Fees For Credit Facilities And Debentures PaymentOfFeesForCreditFacilitiesAndDebentures	5090000	usd
	htgc	Payment Of Fees For Credit Facilities And Debentures PaymentOfFeesForCreditFacilitiesAndDebentures	1635000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	74344000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	289113000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	11355000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-70854000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25876000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	136265000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	37231000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	65411000	usd
	us-gaap	Interest Paid Net InterestPaidNet	57410000	usd
	us-gaap	Interest Paid Net InterestPaidNet	44382000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5205000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7341000	usd
	htgc	Distributions Reinvested DistributionsReinvested	2936000	usd
	htgc	Distributions Reinvested DistributionsReinvested	2895000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	81000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	113000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	31979000	usd
CY2022Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	57065000	usd
CY2023Q3	us-gaap	Restricted Cash RestrictedCash	5252000	usd
CY2022Q3	us-gaap	Restricted Cash RestrictedCash	8346000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	37231000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	65411000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-06
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0300
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0650
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0100
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0595
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5036000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5069000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5135000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-01
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0215
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0915
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.1121
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	28000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	27858000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	28314000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0202
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0440
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1065
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0295
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	15000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14860000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	14938000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0550
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0225
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0105
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0355
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	15113000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	15009000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	15536000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0972
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1062
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0125
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0325
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	85375000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	87142000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	87142000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0641
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	105393000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	105952000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-04
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0550
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0712
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	19493000	gbp
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	26624000	gbp
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	24132000	gbp
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-05
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0700
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	22897000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	22897000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	23491000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0886
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0975
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	14000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14030000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	14180000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-12
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	25922000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	25438000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	25060000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-12
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0550
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0650
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0400
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	28586000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	28212000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	28413000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0700
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1050
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0050
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0100
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	25167000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	25067000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	25282000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0250
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1075
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0050
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0175
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	9128000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	9120000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	9222000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-07
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0500
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8250000	usd
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0450
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0775
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0200
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0450
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5091000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5130000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5193000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0470
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0795
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0450
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5091000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5142000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5256000	usd
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10182000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10272000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	10449000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0940
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1025
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0320
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	88250000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	88965000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	89162000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0935
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1025
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0320
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	6250000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	6279000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6304000	usd
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	94500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	95244000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	95466000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.2937
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	500526000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	485179000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2023Q3	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.1150
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	25000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	24638000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	24638000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2023Q3	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.1195
CY2023Q3	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.0500
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10325000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10134000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	10433000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0344
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	56573000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	56872000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-01
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0365
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0765
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0585
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	12500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	12454000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	12948000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-10
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0310
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0860
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1090
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0530
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	35000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	35002000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	35016000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-01
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0250
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0950
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1075
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0695
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10643000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	10783000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-01
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0220
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0995
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1070
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0578
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	143350000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	143226000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	147815000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0455
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0805
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0905
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0500
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	11500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	11849000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	11654000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0570
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0895
CY2023Q3	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.0900
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0200
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	38167000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	38064000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	34821000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-06
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0570
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0895
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0140
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0170
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0970
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0695
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	9746000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	9746000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-04
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0625
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0950
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0635
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	9842000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10151000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	10222000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-11
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0565
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0915
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.1141
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	38750000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	39530000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	40014000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-04
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0575
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0655
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	18500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	19314000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	19603000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0315
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0715
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0865
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0200
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0575
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	22916000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	23062000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	23118000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0170
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0995
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0540
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0865
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	14495000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	15014000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	15047000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0105
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0455
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0605
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0285
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0715
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	20377000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	20441000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	19828000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-11
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0240
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0865
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.1513
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5510000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5687000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0610
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0935
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	6140000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	6361000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6394000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0245
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0225
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0550
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0335
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0750
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0900
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1145
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0120
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0895
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0225
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0569
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0385
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0895
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0600
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8015000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7854000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-10
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0315
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1015
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.6933
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0116
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	18301000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	19084000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-08
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0570
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0895
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0595
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	11314000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	11671000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	11353000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-11
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0511
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0600
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0445
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0560
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0885
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0461
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	46125000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	47023000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	47342000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0625
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0950
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0155
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	54213000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	53893000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	54483000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0195
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0995
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0685
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	24500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	24350000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	24350000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0275
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	13000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	12826000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	12999000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0190
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1015
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0750
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0595
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	12000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	11822000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	11822000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-03
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	22000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	21885000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	21532000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.1672
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	275632000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	276302000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-11
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0500
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0825
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0110
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0700
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	20420000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	20994000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	21154000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-08
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0145
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0800
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0200
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0275
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1200
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0847
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0937
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	31875000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	31452000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	31757000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0703
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	115617000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	116073000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-04
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0400
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0950
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0500
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0745
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	14000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14185000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	14796000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0144
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	23069000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	23716000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0350
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0100
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	6667000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	6645000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6726000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0350
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0100
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0100
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	1500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1499000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1508000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0350
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0100
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0100
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	1667000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1635000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1638000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0078
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0130
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	21461000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	21461000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0970
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1060
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	2000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1998000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1984000	usd
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	14605000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14506000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	14532000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-10
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0900
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1000
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0814
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0914
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2029-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0725
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0825
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	36410000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	35505000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	35505000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0899
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0999
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0350
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	19600000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	19270000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	20032000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-12
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0789
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0889
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0100
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0899
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0989
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	21298000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	20923000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	21492000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0889
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0989
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	1622000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1599000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1614000	usd
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0295
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0455
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	75092000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	74861000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	24555000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0450
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0825
CY2023Q3	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1025
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-10
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0520
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0995
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0110
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0239
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	42729000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	42897000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	43211000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-04
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0801
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0876
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	7816000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7925000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0450
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0400
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5096000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	4985000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5155000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0688
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0773
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0214
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8338000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8195000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8338000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-10
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0780
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0870
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	57113000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	57065000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	57113000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-04
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0150
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0925
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0220
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0227
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	33283000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	32886000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	32892000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-02
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0025
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0725
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0270
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0215
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0788
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0888
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	18366000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0525
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0850
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0242
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	22500000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	22680000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	23494000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0805
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0905
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	7613000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	7403000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7551000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0135
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0885
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0175
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0445
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	3836000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3764000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	3769000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-09
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0800
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	17865000	usd
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	6000000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5875000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5776000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0100
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0292
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	14991000	usd
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14871000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	15097000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-07
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0150
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0950
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0255
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-03
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0725
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0825
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	13200000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2030-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0650
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0750
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	23000000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-08
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0175
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1000
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0345
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0550
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	1838000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0925
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1000
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10948000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-04
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0045
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0795
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0200
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0375
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.4779
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-05
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0470
CY2023Q3	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0795
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0145
CY2023Q3	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	4082000	usd
CY2023Q3	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-06
CY2023Q3	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.1000
CY2023Q3	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	1780000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0036
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5868000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5915000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	1.8715
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	173180	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1229000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	628000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-04-30
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	12260	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	433000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	33000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2010-04-30
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-09-17
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	100000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1000000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	370000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2016-10-25
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	286080	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1663000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	372000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2016-10-25
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	108710	shares
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-07-31
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	3095	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	39000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-01-24
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	7063	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1001000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	417000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-05-23
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	414994863	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	900000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2016-06-06
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1000000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	0	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0059
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	13171000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	9758000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-03-01
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	32506000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	21553000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-03-26
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	35000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	28668000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-09-30
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0306
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0000
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3638000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	20000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-04-06
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1000	shares
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-10-05
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	98100	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1871000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1971000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-06-21
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	231329	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	2255000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6100000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-01-08
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	13550	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1000000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-07-22
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2007-08-22
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	944	shares
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-10-31
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	170102	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1000000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1006000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2019-11-26
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1566064	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	2945000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1707000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0214
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	40335000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	35429000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-11-17
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	15116	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	650000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	408000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-03-08
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	248900	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1500000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	447000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0005
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2019-03-11
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	825732	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5094000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	807000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-03-30
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	217880	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1687000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	564000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0008
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0036
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	5180000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	250000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	247000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2009-11-30
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0002
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-11-29
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	20000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	4284000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	568000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-10-22
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	552461	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1300000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	2894000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2013-01-18
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	190	shares
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-09-23
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	818337	shares
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-11-25
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	580983	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	2000000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1923000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-08-12
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	52956	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	280000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	219000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-05-07
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	289992	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	101000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	255000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0157
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-06-01
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1035	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	500000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2013-08-31
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	59665	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	102000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-12-10
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	304487	shares
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0027
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0829
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-06-21
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	15399	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	24000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-12-23
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	53418	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	461000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	307000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0002
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0000
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2014-08-13
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0001
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2014-10-27
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	459183	shares
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	2051587	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	140000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	71000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-04-20
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	600000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	16000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2016-06-30
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1800000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	782000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-08-01
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1211537	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	62000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	3611537	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	860000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-05-01
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	267225	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	844000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	403000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-09-25
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	486359	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	218000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-03-31
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	98428	shares
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	79083	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	155000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	18000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0017
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0001
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2014-08-28
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	3929	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	390000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0000
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2019-02-28
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	264226	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1284000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1101000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-06-15
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	102216	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	256000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	121000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2019-03-18
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1392787	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	510000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	365000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0036
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	7471000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5924000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2017-03-15
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	49078	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	101000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	57000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-06-21
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	8503	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	34000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	119000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-11-08
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	622255	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	557000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	170000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0002
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0003
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	749000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	548000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-10-21
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	176200	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	207000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	56000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2014-11-19
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	65587	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	82000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2017-08-22
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	60000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	356000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	351000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-06-29
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	94857	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	35000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	41000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0003
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0013
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1112000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	2163000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-12-30
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	369370	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	67000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	236000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0001
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0002
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	956000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	411000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-06-26
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	750000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	99000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	802000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0005
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-09-30
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	82362	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	252000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	236000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2019-03-29
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	70000	shares
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0079
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	11690000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	12976000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-09-11
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	14440	shares
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0003
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	39000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	418000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-04-15
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	18472	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	52000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	37000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2014-04-22
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	325000	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	155000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	22000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-04-07
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	131883	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	63000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7000	usd
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	456883	shares
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	218000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	29000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-03-24
CY2023Q3	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	150036	shares
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0000
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0168
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	30168000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	27833000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	1.9713
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3304923000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	3256708000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-11-16
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3271000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	3311000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-06-23
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0026
CY2023Q3	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3590000	usd
CY2023Q3	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	4298000	usd
	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-07-21
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0002
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0028
	us-gaap	Derivative Maturity Dates DerivativeMaturityDates	2024-06-03
CY2023Q3	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	19288000	gbp
CY2023Q3	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	23810000	usd
CY2023Q3	htgc	Cumulative Unrealized Gain Loss On Derivatives CumulativeUnrealizedGainLossOnDerivatives	230000	usd
CY2023Q3	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0001
CY2023Q3	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	23810000	usd
CY2023Q3	htgc	Cumulative Unrealized Gain Loss On Derivatives CumulativeUnrealizedGainLossOnDerivatives	230000	usd
CY2023Q3	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0850
CY2023Q3	us-gaap	Tax Basis Of Investments Gross Unrealized Appreciation TaxBasisOfInvestmentsGrossUnrealizedAppreciation	97200000	usd
CY2023Q3	us-gaap	Tax Basis Of Investments Gross Unrealized Depreciation TaxBasisOfInvestmentsGrossUnrealizedDepreciation	143100000	usd
CY2023Q3	us-gaap	Tax Basis Of Investments Unrealized Appreciation Depreciation Net TaxBasisOfInvestmentsUnrealizedAppreciationDepreciationNet	-45900000	usd
CY2023Q3	us-gaap	Tax Basis Of Investments Cost For Income Tax Purposes TaxBasisOfInvestmentsCostForIncomeTaxPurposes	3300000000	usd
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0300
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0650
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0100
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0595
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5000000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-01
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0215
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0915
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.1121
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	28000000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-07
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0325
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0675
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0105
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0355
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5023000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0931
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1031
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8910000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8768000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8748000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-06
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0490
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0815
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0125
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0325
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-04
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0550
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0829
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	40790000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	41856000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	42426000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0470
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0795
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0145
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	18890000	gbp
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-05
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0550
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0886
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0975
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0440
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1065
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0295
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	15000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14739000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	14739000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-03
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0550
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0225
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0400
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0050
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0700
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1050
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0050
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	25071000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	24912000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	25823000	usd
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	85986000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	85633000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	86544000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-11
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0275
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0925
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0175
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	9007000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8918000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8870000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-07
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0500
CY2022Q4	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.0825
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8250000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8250000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8042000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-07
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0500
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	31953000	usd
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0495
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0820
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10103000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10050000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	10167000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-09
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0450
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0775
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0200
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	51937000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	52265000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	52976000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-03
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0400
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0725
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0125
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0450
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0450
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5033000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	4988000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5124000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.3059
CY2022Q4	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.1450
CY2022Q4	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.1150
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	9852000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8898000	usd
CY2022Q4	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.0500
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	12000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	12000000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	12000000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0240
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0365
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0765
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1090
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1075
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1500
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0905
CY2022Q4	us-gaap	Investment Interest Rate Paid In Cash InvestmentInterestRatePaidInCash	0.0900
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0635
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	11000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	11072000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	11067000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-11
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0405
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0755
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0880
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0550
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	15000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	15012000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	13940000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-11
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0590
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0915
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0986
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	58125000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	58674000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	58407000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-10
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0575
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0655
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	18500000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	19109000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	19174000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-07
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0315
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0715
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0865
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0200
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0575
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	15113000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	15109000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	15109000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0540
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0865
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	17000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	17313000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	17265000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0105
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0455
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0605
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0285
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0400
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1025
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0425
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	49500000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	49090000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	49090000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-11
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0240
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0865
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.1513
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5500000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5448000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5448000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-07
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0610
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0935
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8120000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8085000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0395
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0745
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0535
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	34000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	33945000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	33987000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2023-06
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0430
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0980
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0995
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	2079000	usd
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0335
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0175
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0725
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0900
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0345
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0595
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	47983000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	47889000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	48649000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0470
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0795
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0895
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.7859
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1107352000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1101430000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-06
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0450
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0800
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0595
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	12000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	12162000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	12053000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-11
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0500
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0600
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0445
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	51480000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	50813000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	49732000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-03
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0560
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0885
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0461
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	46125000	usd
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0155
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.0945
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0100
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	33808000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	33651000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	33651000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.1398
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-11
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0500
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0825
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0110
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-06
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0550
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1200
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0908
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1008
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	31875000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0372
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0125
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0450
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0745
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0299
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	41568000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	41953000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0500
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0825
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	20000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	19639000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	21192000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0151
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	13176000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	13035000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	12998000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-10
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0900
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1000
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	9306000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	9088000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8977000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2028-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0789
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0889
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	20463000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	19999000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	20123000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-02
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0899
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1000
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8500000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8292000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8176000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-09
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0425
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0250
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	19600000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	19059000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	19059000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0789
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0889
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	45000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	43801000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	43801000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-04
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0370
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0695
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0100
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	33000000	usd
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10175000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	9980000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	9996000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2026-09
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0967
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1067
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	4688000	usd
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0455
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	73987000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	73060000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	73498000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-03
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0450
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0825
CY2022Q4	htgc	Investment Interest Rate Cap InvestmentInterestRateCap	0.1025
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0450
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10144000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10150000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	9820000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-10
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0520
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0995
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0495
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10528000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10298000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	10114000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-07
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0305
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0755
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0110
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	7500000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	7295000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7339000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-04
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0510
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0835
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0295
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0195
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0216
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8223000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8054000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8043000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0996
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1096
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	8436000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8361000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8376000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-02
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0550
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0150
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0300
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	4892000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	4737000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1671000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0779
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0854
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	7000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	6824000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6824000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-10
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0779
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0870
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5948000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5771000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5771000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-10
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0900
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1000
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	6563000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	6422000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6484000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-01
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0775
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	10681000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	10593000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	10593000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-01
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0800
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0900
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	56208000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	56062000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	55520000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-07
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0893
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0993
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	13300000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	13028000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	13028000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-01
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0750
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1075
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	14500000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14398000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	14473000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0906
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.1006
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	17915000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	17556000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	17474000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2023-07
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0375
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0775
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0295
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0195
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	22211000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	22284000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	22284000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-07
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0525
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0850
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	7500000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	7261000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7261000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-04
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0753
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0853
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5985000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5841000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5830000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-02
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0400
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0875
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0200
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0550
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0125
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0525
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	63187000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	62640000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	63429000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-12
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0803
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0903
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	9000000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8779000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	8779000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2027-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0831
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0931
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.5428
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	762371000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	760679000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2025-05
CY2022Q4	us-gaap	Investment Basis Spread Variable Rate InvestmentBasisSpreadVariableRate	0.0470
CY2022Q4	us-gaap	Investment Interest Rate Floor InvestmentInterestRateFloor	0.0795
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.0145
CY2022Q4	htgc	Investment Exit Fee InvestmentExitFee	0.0395
CY2022Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	4037000	usd
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3985000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	4008000	usd
CY2022Q4	htgc	Investments Maturity Month And Year InvestmentsMaturityMonthAndYear	2024-12
CY2022Q4	us-gaap	Investment Interest Rate Paid In Kind InvestmentInterestRatePaidInKind	0.1000
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0050
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	7222000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	7014000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	1.9947
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2010-04-30
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	42137	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2010-04-30
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	42989	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	128000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	132000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2010-04-30
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	42989	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	89000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	116000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0004
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-12-15
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	199742	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-12-20
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	81996	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-12-26
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	100738	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	5263000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1110000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-09-17
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	100000	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2013-06-28
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	48365	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-03-01
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	830000	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1884000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1107000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-03-01
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	10602752	shares
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0249
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-04-06
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	2498	shares
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0001
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-12-11
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	510308	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3000000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	2063000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-10-31
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	170102	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1000000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1012000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0266
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0011
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0021
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0007
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0001
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-08-09
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1000000	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1000000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	793000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-03-24
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	3	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3000000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	3000000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2012-10-26
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	53614	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	51000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	6000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-12-22
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	41000	shares
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	149500	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	638000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	990000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-11-29
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	20000	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	4284000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	503000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-10-22
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	458841	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	1000000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1764000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2017-08-24
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	93620	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	300000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	395000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-08-01
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1019255	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-08-12
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	52956	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2017-03-22
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	700000	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	3748000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	5719000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2021-07-08
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0207
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-07-14
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	2786367	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	429000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-12-18
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1523693	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	118000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-12-18
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	2418125	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	150000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0018
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2015-05-28
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	457841	shares
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0057
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0956
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	153173000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	133972000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-06-21
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	15399	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	24000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	23000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2022-12-23
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	53418	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	461000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	463000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0003
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0001
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2014-08-13
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	54054	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	365000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	0	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2018-06-27
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	686270	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	18000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	475000	usd
CY2022Q4	us-gaap	Investment Owned Percent Of Net Assets InvestmentOwnedPercentOfNetAssets	0.0017
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	2051587	shares
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2020-04-20
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	600000	shares
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	16000	usd
CY2022Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	43000	usd
CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2016-06-30
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	1800000	shares
CY2022Q4	us-gaap	Investment Owned Balance Shares InvestmentOwnedBalanceShares	3611537	shares
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CY2022	htgc	Investments Owned Acquisition Date InvestmentsOwnedAcquisitionDate	2014-11-03
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	us-gaap	Nature Of Operations NatureOfOperations	Description of Business <div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Hercules Capital, Inc. (the “Company”) is a specialty finance company focused on providing senior secured loans to high-growth, innovative venture capital-backed and institutional-backed companies in a variety of technology, life sciences, and sustainable and renewable technology industries. The Company sources its investments through its principal office located in Palo Alto, CA, as well as through its additional offices in Boston, MA, New York, NY, Bethesda, MD, San Diego, CA, Denver, CO, and London, United Kingdom. The Company was incorporated under the General Corporation Law of the State of Maryland in December 2003. </span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company is an internally managed, non-diversified closed-end investment company that has elected to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”). From incorporation through December 31, 2005, the Company was subject to tax as a corporation under Subchapter C of the Internal Revenue Code of 1986, as amended (the “Code”). Effective January 1, 2006, the Company elected to be treated for tax purposes as a Regulated Investment Company (“RIC”) under Subchapter M of the Code (see “Note 6 - Income Taxes”).</span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company is not registered with the Commodity Futures Trading Commission (“CFTC”). The Company has claimed an exclusion from the definition of the term “commodity pool operator” under the Commodity Exchange Act (“CEA”), pursuant to Rule 4.5 under the CEA. The Company is not, therefore, subject to registration or regulation as a “commodity pool operator” under the CEA.</span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Hercules Capital IV, L.P. (“HC IV”) is our wholly owned Delaware limited partnership that was formed in December 2010. HC IV received a license to operate as a small business investment company (“SBIC”) under the authority of the Small Business Administration (“SBA”) on October 27, 2020. SBICs are subject to a variety of regulations concerning, among other things, the size and nature of the companies in which they may invest and the structure of those investments. Hercules Technology SBIC Management, LLC (“HTM”), is a wholly owned limited liability company subsidiary of the Company, which was formed in November 2003 and serves as the general partner of HC IV.</span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company has also established certain wholly owned subsidiaries, all of which are structured as Delaware corporations or Limited Liability Companies (“LLCs”), to hold portfolio companies organized as LLCs (or other forms of pass-through entities). These subsidiaries are consolidated for financial reporting purposes and in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”). Certain of the subsidiaries are taxable and not consolidated with Hercules for income tax purposes and may generate income tax expense, or benefit, and tax assets and liabilities as a result of their ownership of certain portfolio investments.</span></div>The Company formed Hercules Capital Management LLC and Hercules Adviser LLC in 2020 as wholly owned Delaware limited liability subsidiaries. The Company was granted no-action relief by the staff of the Securities and Exchange Commission (“SEC”) to allow Hercules Adviser LLC (the “Adviser Subsidiary”) to register as a registered investment adviser under the Investment Advisers Act of 1940, as amended (“Advisers Act”). The Adviser Subsidiary provides investment advisory and related services to investment vehicles (“Adviser Funds”) owned by one or more unrelated third-party investors (“External Parties”). The Adviser Subsidiary is owned by Hercules Capital Management LLC and collectively held and presented with Hercules Partner Holdings, LLC, which separately wholly owns the general partnership vehicles to each of the Adviser Funds.
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CY2023Q3	us-gaap	Cash Held In Foreign Currency CashHeldInForeignCurrency	201000	usd
	us-gaap	Cash Held In Foreign Currency Acquisition Cost CashHeldInForeignCurrencyAcquisitionCost	265000	usd
CY2022Q4	us-gaap	Cash Held In Foreign Currency CashHeldInForeignCurrency	1178000	usd
CY2022	us-gaap	Cash Held In Foreign Currency Acquisition Cost CashHeldInForeignCurrencyAcquisitionCost	1168000	usd
	us-gaap	Revenue Recognition Interest RevenueRecognitionInterest	<div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Investment Income Recognition</span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company’s investment portfolio generates interest, fee, and dividend income. The Company records interest income on an accrual basis, recognizing income as earned in accordance with the contractual terms of the loan agreement, to the extent that such amounts are expected to be collected. The Company’s Structured Debt investments may generate OID. The OID received upfront typically represents the value of detachable equity, warrants, or another asset obtained in conjunction with the acquisition of debt securities. The OID is accreted into interest income over the term of the loan as a yield enhancement following the effective interest method. Additionally, certain debt investments in the Company’s portfolio earn PIK interest. The Company records PIK interest in accordance with the contractual terms of the loan agreement, to the extent that such amounts are expected to be collected. Contractual PIK interest represents contractually deferred interest that is added to the loan balance as principal and is generally due at the end of the loan term.</span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company’s loan origination activities generate fee income, which is generally collected in advance and includes loan commitment, facility fees for due diligence and structuring, as well as fees for transaction services and management services rendered by the Company to portfolio companies and other third parties. Loan commitment and facility fees are capitalized and then amortized into income over the contractual life of the loan using the effective interest method. One-off fees for transaction and management services are generally recognized as income in the period when the services are rendered. The Company may also earn loan exit fees, which are contractual fees that are generally received upon the earlier of maturity or prepayment. The Company accretes loan exit fees into interest income following the effective interest method, recognizing income as earned in accordance with the contractual terms of the loan agreement, to the extent that such amounts are expected to be collected.</span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">From time to time, additional fees may be earned by the Company relating to specific loan modifications, prepayments, or other one-off events. These non-recurring fees are either amortized into fee income over the remaining term of the loan commencing in the quarter for loan modifications, or recognized currently as one-time fee income for items such as prepayment penalties, fees related to select covenant default waiver fees, and acceleration of previously deferred loan fees and OID related to early loan pay-off or material modification of the specific debt outstanding.</span></div><div style="margin-top:6pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Debt investments are placed on non-accrual status when it is probable that principal, interest or fees will not be collected according to contractual terms. When a debt investment is placed on non-accrual status, the Company ceases to recognize interest and fee income until the portfolio company has paid all principal and interest due or demonstrated the ability to repay its current and future contractual obligations to the Company. The Company may determine to continue to accrue interest on a loan where the investment has sufficient collateral value to collect all of the contractual amount due and is in the process of collection. Interest collected on non-accrual investments are generally applied to principal.</span></div>
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CY2023Q3	htgc	Percent Greater Five Percent Fair Value Equity PercentGreaterFivePercentFairValueEquity	0.527
CY2022Q4	htgc	Count Greater Five Percent Fair Value Equity CountGreaterFivePercentFairValueEquity	4	equityinvestment
CY2022Q4	htgc	Percent Greater Five Percent Fair Value Equity PercentGreaterFivePercentFairValueEquity	0.398
CY2023Q3	us-gaap	Realized And Unrealized Gain Loss Investment And Derivative Operating After Tax RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingAfterTax	784000	usd
CY2022Q3	us-gaap	Realized And Unrealized Gain Loss Investment And Derivative Operating After Tax RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingAfterTax	0	usd
	us-gaap	Realized And Unrealized Gain Loss Investment And Derivative Operating After Tax RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingAfterTax	230000	usd
	us-gaap	Realized And Unrealized Gain Loss Investment And Derivative Operating After Tax RealizedAndUnrealizedGainLossInvestmentAndDerivativeOperatingAfterTax	0	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	110339000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	212391000	usd
CY2023Q3	us-gaap	Fee Income FeeIncome	6405000	usd
CY2022Q3	us-gaap	Fee Income FeeIncome	2821000	usd
	us-gaap	Fee Income FeeIncome	18843000	usd
	us-gaap	Fee Income FeeIncome	9110000	usd
	htgc	Unamortized Fee Income UnamortizedFeeIncome	56700000	usd
CY2022	htgc	Unamortized Fee Income UnamortizedFeeIncome	54000000.0	usd
CY2023Q3	htgc	Exit Fees Receivables ExitFeesReceivables	37600000	usd
CY2022Q4	htgc	Exit Fees Receivables ExitFeesReceivables	37500000	usd
CY2023Q3	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	2215000000	usd
CY2023Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1649000000	usd
CY2023Q3	us-gaap	Long Term Debt LongTermDebt	1632738000	usd
CY2022Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	2185000000	usd
CY2022Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1594000000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	1574351000	usd
CY2023Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	22199000	usd
CY2022Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	22642000	usd
CY2023Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	16428000	usd
CY2023Q3	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1539000	usd
CY2023Q3	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	985000	usd
CY2023Q3	us-gaap	Interest Expense InterestExpense	18952000	usd
CY2023Q3	us-gaap	Interest Paid Net InterestPaidNet	23747000	usd
	us-gaap	Interest Expense Debt InterestExpenseDebt	50237000	usd
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4585000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	17.24
	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	2732000	usd
	us-gaap	Interest Expense InterestExpense	57554000	usd
	us-gaap	Interest Paid Net InterestPaidNet	57410000	usd
CY2022Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	14499000	usd
CY2022Q3	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1268000	usd
CY2022Q3	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	915000	usd
CY2022Q3	us-gaap	Interest Expense InterestExpense	16682000	usd
CY2022Q3	us-gaap	Interest Paid Net InterestPaidNet	21740000	usd
	us-gaap	Interest Expense Debt InterestExpenseDebt	38844000	usd
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3507000	usd
	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	2010000	usd
	us-gaap	Interest Expense InterestExpense	44361000	usd
	us-gaap	Interest Paid Net InterestPaidNet	44382000	usd
CY2022Q4	htgc	Number Of Available Credit Facilities NumberOfAvailableCreditFacilities	2	creditfacility
CY2023Q3	htgc	Number Of Available Credit Facilities NumberOfAvailableCreditFacilities	2	creditfacility
CY2023Q3	htgc	Taxable Net Income Loss TaxableNetIncomeLoss	72700000	usd
CY2022Q3	htgc	Taxable Net Income Loss TaxableNetIncomeLoss	49100000	usd
	htgc	Taxable Net Income Loss TaxableNetIncomeLoss	197700000	usd
	htgc	Taxable Net Income Loss TaxableNetIncomeLoss	122200000	usd
CY2023Q3	htgc	Taxable Income Per Share TaxableIncomePerShare	0.50
CY2022Q3	htgc	Taxable Income Per Share TaxableIncomePerShare	0.39
	htgc	Taxable Income Per Share TaxableIncomePerShare	1.40
	htgc	Taxable Income Per Share TaxableIncomePerShare	0.99
CY2023Q3	htgc	Taxable Net Realized Gain Loss TaxableNetRealizedGainLoss	6800000	usd
CY2022Q3	htgc	Taxable Net Realized Gain Loss TaxableNetRealizedGainLoss	-2000000.0	usd
	htgc	Taxable Net Realized Gain Loss TaxableNetRealizedGainLoss	34200000	usd
	htgc	Taxable Net Realized Gain Loss TaxableNetRealizedGainLoss	-100000	usd
CY2023Q3	htgc	Taxable Net Realized Gain Loss Per Share TaxableNetRealizedGainLossPerShare	0.04
CY2022Q3	htgc	Taxable Net Realized Gain Loss Per Share TaxableNetRealizedGainLossPerShare	-0.02
	htgc	Taxable Net Realized Gain Loss Per Share TaxableNetRealizedGainLossPerShare	0.24
	htgc	Taxable Net Realized Gain Loss Per Share TaxableNetRealizedGainLossPerShare	0
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146898936	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	127484391	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141222973	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123378699	shares
CY2023Q3	us-gaap	Tax Basis Of Investments Gross Unrealized Appreciation TaxBasisOfInvestmentsGrossUnrealizedAppreciation	97200000	usd
CY2022Q4	us-gaap	Tax Basis Of Investments Gross Unrealized Appreciation TaxBasisOfInvestmentsGrossUnrealizedAppreciation	72200000	usd
CY2023Q3	us-gaap	Tax Basis Of Investments Gross Unrealized Depreciation TaxBasisOfInvestmentsGrossUnrealizedDepreciation	143100000	usd
CY2022Q4	us-gaap	Tax Basis Of Investments Gross Unrealized Depreciation TaxBasisOfInvestmentsGrossUnrealizedDepreciation	112000000	usd
CY2023Q3	us-gaap	Tax Basis Of Investments Unrealized Appreciation Depreciation Net TaxBasisOfInvestmentsUnrealizedAppreciationDepreciationNet	-45900000	usd
CY2022Q4	us-gaap	Tax Basis Of Investments Unrealized Appreciation Depreciation Net TaxBasisOfInvestmentsUnrealizedAppreciationDepreciationNet	-39800000	usd
CY2023Q3	us-gaap	Tax Basis Of Investments Cost For Income Tax Purposes TaxBasisOfInvestmentsCostForIncomeTaxPurposes	3300000000	usd
CY2022Q4	us-gaap	Tax Basis Of Investments Cost For Income Tax Purposes TaxBasisOfInvestmentsCostForIncomeTaxPurposes	3000000000	usd
CY2023Q3	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	100000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	526292	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	16.18
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	578579	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	14.39
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	11572	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	15.42
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	25407	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	15.99
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5200000	usd
CY2023Q3	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	5300000	usd
CY2022Q3	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	100000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7300000	usd
CY2022Q3	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	4000000	usd
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	11800000	shares
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	190000000.0	usd
CY2022Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	16.1
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	16200000	shares
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	238300000	usd
CY2023Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	14.7
CY2022	us-gaap	Investment Company Distribution To Shareholders Per Share InvestmentCompanyDistributionToShareholdersPerShare	1.97
CY2022	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	249077000	usd
	us-gaap	Investment Company Distribution To Shareholders Per Share InvestmentCompanyDistributionToShareholdersPerShare	1.42
	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	204687000	usd
	us-gaap	Investment Company Distribution To Shareholders Per Share InvestmentCompanyDistributionToShareholdersPerShare	1.42
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	197592	shares
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	184197	shares
CY2023Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3300000	usd
CY2022Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2500000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9800000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10600000	usd
CY2023Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	21300000	usd
CY2022Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	16000000	usd
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y9M18D
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y9M18D
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	958985	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	16.35
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1037848	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	14.51
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1314268	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	13.83
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	632831	shares
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1735389	shares
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	14.50
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1066693	shares
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	16.16
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	27967000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	53202000	usd
	us-gaap	Net Income Loss NetIncomeLoss	217306000	usd
	us-gaap	Net Income Loss NetIncomeLoss	39548000	usd
CY2023Q3	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	72534000	usd
CY2022Q3	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	63950000	usd
	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	204687000	usd
	us-gaap	Investment Company Dividend Distribution InvestmentCompanyDividendDistribution	181825000	usd
CY2023Q3	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	-44567000	usd
CY2022Q3	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	-10748000	usd
	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	12619000	usd
	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	-142277000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	27293000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	27293000	usd
CY2022Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	52673000	usd
CY2022Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	52673000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	215042000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	215042000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	37837000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37837000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146899000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	127484000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141223000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123379000	shares
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	211000	shares
CY2022Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1850000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	903000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1388000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	147110000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129334000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142126000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	124767000	shares
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.52
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.41
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.51
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Net Asset Value Per Share NetAssetValuePerShare	10.53
CY2021Q4	us-gaap	Net Asset Value Per Share NetAssetValuePerShare	11.22
	us-gaap	Investment Company Investment Income Loss From Operations Per Share InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare	1.54
	us-gaap	Investment Company Investment Income Loss From Operations Per Share InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare	0.31
	us-gaap	Investment Company Issuance Of Shares Per Share InvestmentCompanyIssuanceOfSharesPerShare	0.25
	us-gaap	Investment Company Issuance Of Shares Per Share InvestmentCompanyIssuanceOfSharesPerShare	0.31
	htgc	Investment Company Distribution To Shareholders Per Share Excluding Capital Share Transactions InvestmentCompanyDistributionToShareholdersPerShareExcludingCapitalShareTransactions	1.45
	htgc	Investment Company Distribution To Shareholders Per Share Excluding Capital Share Transactions InvestmentCompanyDistributionToShareholdersPerShareExcludingCapitalShareTransactions	1.11
	htgc	Investment Company Dividend Distribution Per Share InvestmentCompanyDividendDistributionPerShare	0
	htgc	Investment Company Dividend Distribution Per Share InvestmentCompanyDividendDistributionPerShare	-0.35
	htgc	Investment Company Stock Based Compensation Expense Included In Investment Income InvestmentCompanyStockBasedCompensationExpenseIncludedInInvestmentIncome	0.06
	htgc	Investment Company Stock Based Compensation Expense Included In Investment Income InvestmentCompanyStockBasedCompensationExpenseIncludedInInvestmentIncome	0.09
CY2023Q3	us-gaap	Net Asset Value Per Share NetAssetValuePerShare	10.93
CY2022Q3	us-gaap	Net Asset Value Per Share NetAssetValuePerShare	10.47
CY2023Q3	us-gaap	Share Price SharePrice	16.42
CY2022Q3	us-gaap	Share Price SharePrice	11.58
	us-gaap	Investment Company Total Return InvestmentCompanyTotalReturn	0.3609
	us-gaap	Investment Company Total Return InvestmentCompanyTotalReturn	-0.2434
CY2023Q3	us-gaap	Shares Outstanding SharesOutstanding	151179000	shares
CY2022Q3	us-gaap	Shares Outstanding SharesOutstanding	130191000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141223000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123379000	shares
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1652057000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	1362718000	usd
	us-gaap	Investment Company Expense Ratio Including Incentive Fee InvestmentCompanyExpenseRatioIncludingIncentiveFee	0.1038
	us-gaap	Investment Company Expense Ratio Including Incentive Fee InvestmentCompanyExpenseRatioIncludingIncentiveFee	0.0951
	us-gaap	Investment Company Investment Income Loss Ratio InvestmentCompanyInvestmentIncomeLossRatio	0.1885
	us-gaap	Investment Company Investment Income Loss Ratio InvestmentCompanyInvestmentIncomeLossRatio	0.1253
	us-gaap	Investment Company Portfolio Turnover InvestmentCompanyPortfolioTurnover	0.2220
	us-gaap	Investment Company Portfolio Turnover InvestmentCompanyPortfolioTurnover	0.1412
	us-gaap	Long Term Debt Average Amount Outstanding LongTermDebtAverageAmountOutstanding	1601552000	usd
	us-gaap	Long Term Debt Average Amount Outstanding LongTermDebtAverageAmountOutstanding	1430814000	usd
	htgc	Weighted Average Debt Per Common Share WeightedAverageDebtPerCommonShare	11.34
	htgc	Weighted Average Debt Per Common Share WeightedAverageDebtPerCommonShare	11.60
CY2023Q3	us-gaap	Investment Company Financial Commitment To Investee Future Amount InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount	400600000	usd
CY2022Q4	us-gaap	Investment Company Financial Commitment To Investee Future Amount InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount	628900000	usd
CY2023Q3	us-gaap	Investment Company Financial Commitment To Investee Future Amount InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount	400583000	usd
CY2022Q4	us-gaap	Investment Company Financial Commitment To Investee Future Amount InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount	628874000	usd
CY2023Q3	us-gaap	Investment Company Financial Commitment To Investee Future Amount InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount	400583000	usd
CY2022Q4	us-gaap	Investment Company Financial Commitment To Investee Future Amount InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount	628874000	usd
CY2023Q3	us-gaap	Contractual Obligation ContractualObligation	1676693000	usd
CY2023Q3	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	108054000	usd
CY2023Q3	us-gaap	Contractual Obligation Due In Second And Third Year ContractualObligationDueInSecondAndThirdYear	601606000	usd
CY2023Q3	us-gaap	Contractual Obligation Due In Fourth And Fifth Year ContractualObligationDueInFourthAndFifthYear	590218000	usd
CY2023Q3	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	376815000	usd
CY2022Q4	us-gaap	Contractual Obligation ContractualObligation	1602641000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	2723000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Second And Third Year ContractualObligationDueInSecondAndThirdYear	384259000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Fourth And Fifth Year ContractualObligationDueInFourthAndFifthYear	849452000	usd
CY2022Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	366207000	usd
CY2023Q3	htgc	Rent Expense Total RentExpenseTotal	900000	usd
	htgc	Rent Expense Total RentExpenseTotal	2500000	usd
CY2022Q3	htgc	Rent Expense Total RentExpenseTotal	800000	usd
	htgc	Rent Expense Total RentExpenseTotal	2400000	usd
CY2023Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	691000	usd
CY2022Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	744000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	1995000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	2185000	usd
CY2023Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	495000	usd
CY2022Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	642000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	2231000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	2411000	usd
CY2023Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y7M9D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y5M23D
CY2023Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0679
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0537
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	367000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	2597000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3269000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3364000	usd
CY2023Q3	htgc	Lessee Operating Lease Liability Payments Due After Year Four LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour	17412000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	27009000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	21661000	usd
CY2023Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	5348000	usd
CY2023Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
FilingSummary.xml	Edgar Link	unprocessable
0001280784-23-000008-index-headers.html	Edgar Link	pending
0001280784-23-000008-index.html	Edgar Link	pending
0001280784-23-000008.txt	Edgar Link	pending
0001280784-23-000008-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
htgc-20230930.htm	Edgar Link	pending
htgc-20230930.xsd	Edgar Link	pending
htgcq3202310q-exx311.htm	Edgar Link	pending
htgcq3202310q-exx312.htm	Edgar Link	pending
htgcq3202310q-exx321.htm	Edgar Link	pending
htgcq3202310q-exx322.htm	Edgar Link	pending
htgc_clean.pdf	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
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R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
htgc-20230930_def.xml	Edgar Link	unprocessable
htgc-20230930_lab.xml	Edgar Link	unprocessable
htgc-20230930_pre.xml	Edgar Link	unprocessable
htgc-20230930_htm.xml	Edgar Link	completed
htgc-20230930_cal.xml	Edgar Link	unprocessable
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
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R70.htm	Edgar Link	pending
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R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$HTGC
Hercules Capital, Inc. Stock $htgc

2023 Q4 Form 10-Q Financial Statement

#000128078423000008 Filed on November 02, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTGC Hercules Capital, Inc. Stock $htgc

2023 Q4 Form 10-Q Financial Statement

#000128078423000008 Filed on November 02, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTGC
Hercules Capital, Inc. Stock $htgc