$HTLF
HEARTLAND FINANCIAL USA INC Stock $htlf

$htlf Overview Financials Valuation SEC Filings Company Website

2020 Q3 Form 10-Q Financial Statement

#000092011220000304 Filed on November 05, 2020

Income Statement

Concept	2020 Q3	2019 Q3	2019 Q2
Revenue	$131.0M	$133.4M	$127.0M
YoY Change	-1.83%	6.81%	11.99%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.600M	$7.300M	$8.100M
YoY Change	-9.59%	-12.05%	8.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$8.470M	$22.08M	$20.30M
YoY Change	-61.64%	55.33%	69.13%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$61.64M	$42.55M	$58.75M
YoY Change	44.85%	-0.26%	66.3%
Income Tax	$13.68M	$7.941M	$13.58M
% Of Pretax Income	22.2%	18.66%	23.12%
Net Earnings	$47.96M	$34.61M	$45.17M
YoY Change	38.56%	2.68%	62.02%
Net Earnings / Revenue	36.62%	25.95%	35.57%
Basic Earnings Per Share	$1.23	$0.94	$1.26
Diluted Earnings Per Share	$1.23	$0.94	$1.26
COMMON SHARES
Basic Shares Outstanding	36.94M shares	36.69M shares	35.74M shares
Diluted Shares Outstanding	37.00M shares	36.84M shares	35.88M shares

Balance Sheet

Concept	2020 Q3	2019 Q3	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$5.282B
YoY Change
Cash & Equivalents	$331.7M	$447.8M	$642.1M
Short-Term Investments	$4.951B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$199.5M	$196.0M	$194.6M
YoY Change	1.77%	1.13%	-0.69%
Goodwill	$446.3M	$427.1M	$427.1M
YoY Change	4.5%	9.05%	9.05%
Intangibles	$46.27M	$56.09M	$59.90M
YoY Change	-17.5%	-31.69%	-29.28%
Long-Term Investments
YoY Change
Other Assets	$1.000M	$3.000M	$4.000M
YoY Change	-66.67%	-25.0%	0.0%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$15.61B	$12.57B	$12.16B
YoY Change	24.21%	10.89%	7.59%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$203.0M	$122.0M	$119.0M
YoY Change	66.39%	45.24%	75.0%
Deferred Revenue
YoY Change
Short-Term Debt	$306.7M	$107.9M	$107.3M
YoY Change	184.37%	-17.76%	-53.34%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$203.0M	$122.0M	$119.0M
YoY Change	66.39%	45.24%	27.96%
LONG-TERM LIABILITIES
Long-Term Debt	$523.0M	$275.0M	$280.0M
YoY Change	90.18%	0.36%	14.29%
Other Long-Term Liabilities		$28.00M	$20.00M
YoY Change		-44.0%
Total Long-Term Liabilities	$523.0M	$303.0M	$300.0M
YoY Change	72.61%	-6.48%	22.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$203.0M	$122.0M	$119.0M
Total Long-Term Liabilities	$523.0M	$303.0M	$300.0M
Total Liabilities	$13.80B	$11.01B	$10.64B
YoY Change	25.4%	9.46%	5.9%
SHAREHOLDERS EQUITY
Retained Earnings	$761.2M	$670.8M	$642.8M
YoY Change	13.48%	21.16%	22.49%
Common Stock	$884.3M	$875.2M	$873.8M
YoY Change	1.03%	12.71%	12.82%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares			0.000 shares
Shareholders Equity	$1.812B	$1.564B	$1.522B
YoY Change
Total Liabilities & Shareholders Equity	$15.61B	$12.57B	$12.16B
YoY Change	24.21%	10.89%	7.59%

Cashflow Statement

Concept	2020 Q3	2019 Q3	2019 Q2
OPERATING ACTIVITIES
Net Income	$47.96M	$34.61M	$45.17M
YoY Change	38.56%	2.68%	62.02%
Depreciation, Depletion And Amortization	$6.600M	$7.300M	$8.100M
YoY Change	-9.59%	-12.05%	8.0%
Cash From Operating Activities	$51.90M	$34.60M	$28.30M
YoY Change	50.0%	-52.86%	-18.44%
INVESTING ACTIVITIES
Capital Expenditures	-$5.500M	-$4.500M	-$2.800M
YoY Change	22.22%	125.0%	-62.16%
Acquisitions
YoY Change
Other Investing Activities	-$653.6M	-$575.6M	$37.10M
YoY Change	13.55%	5381.9%	-252.05%
Cash From Investing Activities	-$659.1M	-$580.1M	$34.30M
YoY Change	13.62%	4578.23%	-207.52%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	485.2M	351.2M	87.10M
YoY Change	38.15%	-3127.59%	-26.75%
NET CHANGE
Cash From Operating Activities	51.90M	34.60M	28.30M
Cash From Investing Activities	-659.1M	-580.1M	34.30M
Cash From Financing Activities	485.2M	351.2M	87.10M
Net Change In Cash	-122.0M	-194.3M	149.7M
YoY Change	-37.21%	-493.32%	23.01%
FREE CASH FLOW
Cash From Operating Activities	$51.90M	$34.60M	$28.30M
Capital Expenditures	-$5.500M	-$4.500M	-$2.800M
Free Cash Flow	$57.40M	$39.10M	$31.10M
YoY Change	46.8%	-48.14%	-26.13%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0000920112
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201602Member
CY2019	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member
CY2019	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member
CY2019	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-15393
	dei	Entity Registrant Name EntityRegistrantName	HEARTLAND FINANCIAL USA, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	42-1405748
	dei	Entity Address Address Line1 EntityAddressAddressLine1	1398 Central Avenue
	dei	Entity Address City Or Town EntityAddressCityOrTown	Dubuque
	dei	Entity Address State Or Province EntityAddressStateOrProvince	IA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	52001
	dei	City Area Code CityAreaCode	563
	dei	Local Phone Number LocalPhoneNumber	589-2100
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5779000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6556000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	31216000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	29400000	USD
	us-gaap	Noninterest Income NoninterestIncome	87670000	USD
	us-gaap	Noninterest Income NoninterestIncome	88178000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	50978000	USD
CY2019Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	49927000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	151053000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	150107000	USD
CY2020Q3	us-gaap	Occupancy Net OccupancyNet	6732000	USD
CY2019Q3	us-gaap	Occupancy Net OccupancyNet	6594000	USD
	us-gaap	Occupancy Net OccupancyNet	19705000	USD
	us-gaap	Occupancy Net OccupancyNet	19627000	USD
CY2020Q3	us-gaap	Equipment Expense EquipmentExpense	2500000	USD
CY2019Q3	us-gaap	Equipment Expense EquipmentExpense	2862000	USD
	us-gaap	Equipment Expense EquipmentExpense	8601000	USD
	us-gaap	Equipment Expense EquipmentExpense	8690000	USD
CY2020Q3	us-gaap	Professional Fees ProfessionalFees	12802000	USD
CY2019Q3	us-gaap	Professional Fees ProfessionalFees	11276000	USD
	us-gaap	Professional Fees ProfessionalFees	38951000	USD
	us-gaap	Professional Fees ProfessionalFees	36642000	USD
CY2020Q3	us-gaap	Advertising Expense AdvertisingExpense	928000	USD
CY2019Q3	us-gaap	Advertising Expense AdvertisingExpense	2622000	USD
	us-gaap	Advertising Expense AdvertisingExpense	4128000	USD
	us-gaap	Advertising Expense AdvertisingExpense	7551000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2492000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2899000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8169000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9054000	USD
CY2020Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-335000	USD
CY2019Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	89000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-872000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-774000	USD
CY2020Q3	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-1763000	USD
CY2019Q3	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-356000	USD
	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-2480000	USD
	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	20934000	USD
CY2020Q3	htlf	Business Acquisition Integration And Restructuring Costs BusinessAcquisitionIntegrationAndRestructuringCosts	1146000	USD
CY2019Q3	htlf	Business Acquisition Integration And Restructuring Costs BusinessAcquisitionIntegrationAndRestructuringCosts	1500000	USD
	htlf	Business Acquisition Integration And Restructuring Costs BusinessAcquisitionIntegrationAndRestructuringCosts	3195000	USD
	htlf	Business Acquisition Integration And Restructuring Costs BusinessAcquisitionIntegrationAndRestructuringCosts	6043000	USD
CY2020Q3	htlf	Partnership Investment In Tax Credit Projects PartnershipInvestmentInTaxCreditProjects	927000	USD
CY2019Q3	htlf	Partnership Investment In Tax Credit Projects PartnershipInvestmentInTaxCreditProjects	3052000	USD
	htlf	Partnership Investment In Tax Credit Projects PartnershipInvestmentInTaxCreditProjects	1902000	USD
	htlf	Partnership Investment In Tax Credit Projects PartnershipInvestmentInTaxCreditProjects	4992000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	9793000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	11968000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	32638000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	33749000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	90396000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	92967000	USD
	us-gaap	Noninterest Expense NoninterestExpense	271694000	USD
	us-gaap	Noninterest Expense NoninterestExpense	256295000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	61639000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	42553000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	125136000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	141113000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13681000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7941000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27007000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29835000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	47958000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	34612000	USD
	us-gaap	Net Income Loss NetIncomeLoss	98129000	USD
	us-gaap	Net Income Loss NetIncomeLoss	111278000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	45521000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	34612000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	95692000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	111278000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.59
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.12
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.23
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.59
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.11
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.50
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	47958000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	34612000	USD
	us-gaap	Net Income Loss NetIncomeLoss	98129000	USD
	us-gaap	Net Income Loss NetIncomeLoss	111278000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	31340000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	19851000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	84564000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	78238000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	1099000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	2013000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	4763000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	7168000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	7845000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	4577000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	20777000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	18241000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	22396000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	13261000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	59024000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	52829000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	1199000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-800000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-2164000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-4568000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	601000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-27000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	1214000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-279000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	126000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	-161000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	-706000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	-897000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	472000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-612000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-2672000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-3392000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	22868000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	12649000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	56352000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	49437000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	70826000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	47261000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	154481000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	160715000	USD
	us-gaap	Net Income Loss NetIncomeLoss	98129000	USD
	us-gaap	Net Income Loss NetIncomeLoss	111278000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	20726000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	23561000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	49994000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	11754000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-9925000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-15959000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	4964000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	7168000	USD
	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	604000	USD
	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	514000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	5551000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4833000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	461723000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	289877000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	443913000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	289769000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	21411000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	11545000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	7955000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-932000	USD
	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-408000	USD
	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	3611000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-1461000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	1905000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	375000	USD
	htlf	Paymentsto Acquire Mortgage Servicing Rights Msr Operating Activities PaymentstoAcquireMortgageServicingRightsMSROperatingActivities	2633000	USD
	htlf	Paymentsto Acquire Mortgage Servicing Rights Msr Operating Activities PaymentstoAcquireMortgageServicingRightsMSROperatingActivities	756000	USD
	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	1676000	USD
	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	1579000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-2480000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	10378000	USD
	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	-93000	USD
	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	270000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	48914000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	40706000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	83044000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	96910000	USD
	us-gaap	Payments For Deposits With Other Institutions PaymentsForDepositsWithOtherInstitutions	8000	USD
	us-gaap	Payments For Deposits With Other Institutions PaymentsForDepositsWithOtherInstitutions	254000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	818022000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1485773000	USD
	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	1056000	USD
	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	400565000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	265500000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	3235000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	2938000	USD
	htlf	Proceedsfrom Maturities Prepaymentsand Callsof Other Securities ProceedsfromMaturitiesPrepaymentsandCallsofOtherSecurities	593000	USD
	htlf	Proceedsfrom Maturities Prepaymentsand Callsof Other Securities ProceedsfromMaturitiesPrepaymentsandCallsofOtherSecurities	1215000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	6297000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	10297000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2777981000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1984228000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	10916000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	4957000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	746723000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	47023000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	208000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	16000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	606000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	421000	USD
	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	0	USD
	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	33823000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	13178000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8389000	USD
	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	USD
	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	38650000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3339000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1277000	USD
	htlf	Cash Divested For Divestiture Of Businesses CashDivestedForDivestitureOfBusinesses	0	USD
	htlf	Cash Divested For Divestiture Of Businesses CashDivestedForDivestitureOfBusinesses	49264000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	2559000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	6907000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2312742000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-247330000	USD
	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	1478704000	USD
	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	159044000	USD
	us-gaap	Increase Decrease In Savings Deposits IncreaseDecreaseInSavingsDeposits	434726000	USD
	us-gaap	Increase Decrease In Savings Deposits IncreaseDecreaseInSavingsDeposits	347749000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-190651000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-397000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	205277000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-43733000	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	541545000	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	430888000	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	622742000	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	531725000	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	254833000	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	50000	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	7399000	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	17769000	USD
	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	0	USD
	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	2125000	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	110705000	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2150000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	576000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	24529000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	18001000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2182619000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	324557000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-47079000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	174137000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	378734000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	273630000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	331655000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	447767000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	26701000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	30523000	USD
	us-gaap	Interest Paid Net InterestPaidNet	38088000	USD
	us-gaap	Interest Paid Net InterestPaidNet	58297000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	1706000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	7421000	USD
	htlf	Transfer Of Property Plant And Equipment Net To Assets Held For Sale TransferOfPropertyPlantAndEquipmentNetToAssetsHeldForSale	0	USD
	htlf	Transfer Of Property Plant And Equipment Net To Assets Held For Sale TransferOfPropertyPlantAndEquipmentNetToAssetsHeldForSale	2568000	USD
	htlf	Transfer Of Property Plant And Equipment From Held For Sale TransferOfPropertyPlantAndEquipmentFromHeldForSale	450000	USD
	htlf	Transfer Of Property Plant And Equipment From Held For Sale TransferOfPropertyPlantAndEquipmentFromHeldForSale	1564000	USD
	htlf	Transfer Of Deposits To Heldforsale TransferOfDepositsToHeldforsale	0	USD
	htlf	Transfer Of Deposits To Heldforsale TransferOfDepositsToHeldforsale	76968000	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	32111000	USD
	htlf	Debt Securities Held To Maturity Trasfer Amount To Debt Securities Available For Sale DebtSecuritiesHeldToMaturityTrasferAmountToDebtSecuritiesAvailableForSale	0	USD
	htlf	Debt Securities Held To Maturity Trasfer Amount To Debt Securities Available For Sale DebtSecuritiesHeldToMaturityTrasferAmountToDebtSecuritiesAvailableForSale	148030000	USD
	htlf	Purchases Of Available For Sale Securities Accrued Not Paid PurchasesOfAvailableForSaleSecuritiesAccruedNotPaid	4792000	USD
	htlf	Purchases Of Available For Sale Securities Accrued Not Paid PurchasesOfAvailableForSaleSecuritiesAccruedNotPaid	22879000	USD
	htlf	Debt Securities Available For Sale Transfer Amount To Debt Securities Held To Maturity DebtSecuritiesAvailableForSaleTransferAmountToDebtSecuritiesHeldToMaturity	462000	USD
	htlf	Debt Securities Available For Sale Transfer Amount To Debt Securities Held To Maturity DebtSecuritiesAvailableForSaleTransferAmountToDebtSecuritiesHeldToMaturity	0	USD
	htlf	Purchases Of Loans Held To Maturity Accrued Not Paid PurchasesOfLoansHeldToMaturityAccruedNotPaid	9600000	USD
	htlf	Purchases Of Loans Held To Maturity Accrued Not Paid PurchasesOfLoansHeldToMaturityAccruedNotPaid	0	USD
	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	92258000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	1521787000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	47261000	USD
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	6604000	USD
CY2019Q3	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	6129	shares
CY2019Q3	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	168000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1231000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1563843000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1325175000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	160715000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.50
	us-gaap	Dividends Common Stock DividendsCommonStock	18001000	USD
	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	2218691	shares
	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	92834000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4833000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1563843000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	1747377000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	70826000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	211.94
CY2020Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2437000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	7377000	USD
CY2020Q3	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	40646	shares
CY2020Q3	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	1222000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1993000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1811604000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1578137000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	154481000	USD
	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	211.94
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2437000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
	us-gaap	Dividends Common Stock DividendsCommonStock	22092000	USD
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	11500	shares
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	110705000	USD
	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	181112	shares
	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	2150000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5551000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1811604000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	47958000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	34612000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	45521000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	34612000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36941000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36692000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	54000	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	143000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36995000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36835000	shares
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.23
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	41000	shares
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	8000	shares
	us-gaap	Net Income Loss NetIncomeLoss	98129000	USD
	us-gaap	Net Income Loss NetIncomeLoss	111278000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	95692000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	111278000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36882000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	35675000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	74000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	143000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36956000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	35818000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.59
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.12
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.59
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.11
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	8000	shares
	htlf	Threshold Period Past Duefor Nonperforming Statusof Financing Receivable ThresholdPeriodPastDueforNonperformingStatusofFinancingReceivable	P90D
CY2020Q1	htlf	Business Acquisition Equity Interest Issued Or Issuable Number Of Shares Issued In Exchange Per Share BusinessAcquisitionEquityInterestIssuedOrIssuableNumberOfSharesIssuedInExchangePerShare	207.0
CY2020Q3	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	19569000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	19569000	USD
CY2020Q3	htlf	Marketable Securities Amortized Cost Basis MarketableSecuritiesAmortizedCostBasis	4869531000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	108020000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	26853000	USD
CY2020Q3	us-gaap	Marketable Securities MarketableSecurities	4950698000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	18435000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	18435000	USD
CY2019Q4	htlf	Marketable Securities Amortized Cost Basis MarketableSecuritiesAmortizedCostBasis	3311433000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	29765000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	28402000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	3312796000	USD
CY2020Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	88761000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	10858000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2020Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	99619000	USD
CY2020Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	61000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	91324000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	9160000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	100484000	USD
CY2019Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	USD
CY2020Q3	htlf	Interest Receivable Debt Securities InterestReceivableDebtSecurities	14700000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	6756000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	6784000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	25556000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	26229000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	68084000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	72131000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1029819000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1083477000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	1130215000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	1188621000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	3719747000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	3742508000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	19569000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	19569000	USD
CY2020Q3	us-gaap	Debt Securities Trading And Equity Securities Fv Ni Cost DebtSecuritiesTradingAndEquitySecuritiesFvNiCost	4869531000	USD
CY2020Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	4950698000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	930000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	944000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	18694000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	19855000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	59367000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	65371000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	9770000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	13449000	USD
CY2020Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	88761000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	99619000	USD
CY2020Q3	htlf	Debt Securities Held To Maturity Allowance For Credit Loss Amortized Cost DebtSecuritiesHeldToMaturityAllowanceForCreditLossAmortizedCost	61000	USD
CY2020Q3	htlf	Debt Securities Held To Maturity Allowance For Credit Loss Fair Value DebtSecuritiesHeldToMaturityAllowanceForCreditLossFairValue	0	USD
CY2020Q3	htlf	Debt Securities Held To Maturity After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAfterAllowanceForCreditLoss	88700000	USD
CY2020Q3	htlf	Debt Securities Held To Maturity Fair Value After Allowance For Credit Loss DebtSecuritiesHeldToMaturityFairValueAfterAllowanceForCreditLoss	99619000	USD
CY2020Q3	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	1910000000	USD
CY2019Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	509600000	USD
CY2020Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	306383000	USD
CY2019Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	290877000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	818022000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1485773000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1825000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2371000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	8687000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	10301000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	726000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	358000	USD
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	3924000	USD
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	3133000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1433314000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	16931000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	98	numberOfBankLocations
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	544573000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	9922000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	108	numberOfBankLocations
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1977887000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	26853000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	206	numberOfBankLocations
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1619266000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	23588000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	200	numberOfBankLocations
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	241232000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	4814000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	58	numberOfBankLocations
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1860498000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	28402000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	258	numberOfBankLocations
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	0	USD
CY2020Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	0	USD
	us-gaap	Debt Securities Held To Maturity Sold Amount DebtSecuritiesHeldToMaturitySoldAmount	855000	USD
	us-gaap	Held To Maturity Securities Sold Security Realized Gain Loss HeldToMaturitySecuritiesSoldSecurityRealizedGainLoss	201000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	20900000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	16800000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	9099646000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8367917000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	103377000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	70395000	USD
CY2020Q3	us-gaap	Financing Receivable Covered And Not Covered After Allowance For Credit Loss Fee Premium And Discount FinancingReceivableCoveredAndNotCoveredAfterAllowanceForCreditLossFeePremiumAndDiscount	8996269000	USD
CY2019Q4	us-gaap	Financing Receivable Covered And Not Covered After Allowance For Credit Loss Fee Premium And Discount FinancingReceivableCoveredAndNotCoveredAfterAllowanceForCreditLossFeePremiumAndDiscount	8297522000	USD
CY2020Q3	htlf	Financing Receivable Accrued Interest FinancingReceivableAccruedInterest	38000000.0	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8447000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	94930000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	103377000	USD
CY2020Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	59916000	USD
CY2020Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	9039730000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	9099646000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8171000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	62224000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	70395000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	87052000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	8280865000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8367917000	USD
CY2020Q3	htlf	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	35576000	USD
CY2020Q3	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	43464000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	79040000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	1681000	USD
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	USD
CY2020Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	15900000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	7600000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	loan
CY2020Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	9454000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	9454000	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0	loan
CY2019Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	0	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	0	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4	loan
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	9546000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	9552000	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4	loan
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	276000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	288000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
CY2020Q3	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1600000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	16817000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	9003789000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	79040000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	9099646000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	31928000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	8259441000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	76548000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8367917000	USD
CY2020Q3	htlf	Financing Receivable Recorded Investment30to89 Days Past Due Percentage FinancingReceivableRecordedInvestment30to89DaysPastDuePercentage	0.0017
CY2019Q4	htlf	Financing Receivable Recorded Investment30to89 Days Past Due Percentage FinancingReceivableRecordedInvestment30to89DaysPastDuePercentage	0.0033
CY2019	htlf	Threshold Period Past Duefor Nonperforming Statusof Financing Receivable ThresholdPeriodPastDueforNonperformingStatusofFinancingReceivable	P90D
CY2020Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
CY2019Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1	loan
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	236000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	3	loan
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	253000	USD
CY2020Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	2473911000	USD
CY2020Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	1710024000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1255022000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	860650000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	488559000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1265027000	USD
CY2020Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1046453000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	9099646000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8367917000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	17721000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	17189000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	18217000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	39000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	75171000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8172000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	69863000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	67721000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	1596000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	92892000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	87052000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8172000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	85938000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1635000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	119937000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	21753000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	452000	USD
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4741000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	103377000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	70395000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	31618000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2916000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	49613000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	103377000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	63850000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	4842000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2013000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	3138000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	10037000	USD
CY2019Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5201000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	66222000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61963000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	11572000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	4077000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	11754000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	66222000	USD
CY2020Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	17392000	USD
CY2020Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-3062000	USD
CY2020Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	14330000	USD
CY2019Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	248000	USD
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	478000	USD
CY2020Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	14330000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	446300000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	446300000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	115469000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	69197000	USD
CY2020Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	46272000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	112836000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	57412000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	55424000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	8268000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	7147000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	5844000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	4850000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	6988000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	46272000	USD
	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	2100000	USD
CY2020Q3	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	4200000	USD
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	1900000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-1200000	USD
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-2400000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	17755000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	18287000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	52075000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	56771000	USD
CY2020Q3	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	638000	USD
CY2019Q3	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	821000	USD
	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	1980000	USD
	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	3888000	USD
CY2020Q3	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1300000	USD
CY2019Q3	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	2013000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	4964000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	7168000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	155000	USD
CY2019Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	144000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	604000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	514000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	8894000	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	4673000	USD
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	21411000	USD
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	12192000	USD
CY2020Q3	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	120000	USD
CY2019Q3	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	626000	USD
	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	1676000	USD
	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	1579000	USD
CY2020Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	868000	USD
CY2019Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	881000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2533000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2668000	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1726000	USD
CY2019Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3207000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5779000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6556000	USD
CY2020Q3	htlf	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	13461000	USD
CY2019Q3	htlf	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	11113000	USD
	htlf	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	35595000	USD
	htlf	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	31407000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	31216000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	29400000	USD
	us-gaap	Noninterest Income NoninterestIncome	87670000	USD
	us-gaap	Noninterest Income NoninterestIncome	88178000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	93000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	270000	USD
	htlf	Sharebased Compensation Arrangementby Sharebased Payment Award Period Before Change In Control SharebasedCompensationArrangementbySharebasedPaymentAwardPeriodBeforeChangeInControl	P6M
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	19963000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23200000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	21949000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24617000	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1359000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1681000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3998000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	4548000	USD
CY2020Q3	us-gaap	Variable Lease Cost VariableLeaseCost	14000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	42000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	46000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	109000	USD
CY2020Q3	us-gaap	Lease Cost LeaseCost	1373000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	1723000	USD
	us-gaap	Lease Cost LeaseCost	4044000	USD
	us-gaap	Lease Cost LeaseCost	4657000	USD
CY2020Q3	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Right Of Use Assets OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfRightOfUseAssets	692000	USD
CY2019Q3	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Right Of Use Assets OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfRightOfUseAssets	495000	USD
	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Right Of Use Assets OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfRightOfUseAssets	1067000	USD
	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Right Of Use Assets OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfRightOfUseAssets	2959000	USD
CY2020Q3	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Lease Liabilities OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfLeaseLiabilities	3000	USD
CY2019Q3	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Lease Liabilities OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfLeaseLiabilities	284000	USD
	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Lease Liabilities OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfLeaseLiabilities	389000	USD
	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Lease Liabilities OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfLeaseLiabilities	2771000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y6M
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0297
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1422000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5406000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4183000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	2850000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2140000	USD
CY2020Q3	htlf	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	8160000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	24161000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2212000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	21949000	USD

Files In Submission

Name	View Source	Status
0000920112-20-000304-index-headers.html	Edgar Link	pending
0000920112-20-000304-index.html	Edgar Link	pending
0000920112-20-000304.txt	Edgar Link	pending
0000920112-20-000304-xbrl.zip	Edgar Link	pending
ex-31109302020.htm	Edgar Link	pending
ex-31209302020.htm	Edgar Link	pending
ex-32109302020.htm	Edgar Link	pending
ex-32209302020.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
htlf-20200930.htm	Edgar Link	pending
htlf-20200930.xsd	Edgar Link	pending
htlf-20200930_cal.xml	Edgar Link	unprocessable
htlf-20200930_def.xml	Edgar Link	unprocessable
htlf-20200930_htm.xml	Edgar Link	completed
htlf-20200930_lab.xml	Edgar Link	unprocessable
htlf-20200930_pre.xml	Edgar Link	unprocessable
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$HTLF
HEARTLAND FINANCIAL USA INC Stock $htlf

2020 Q3 Form 10-Q Financial Statement

#000092011220000304 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTLF HEARTLAND FINANCIAL USA INC Stock $htlf

2020 Q3 Form 10-Q Financial Statement

#000092011220000304 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTLF
HEARTLAND FINANCIAL USA INC Stock $htlf