$INBK
First Internet Bancorp Stock $inbk

$inbk Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000156246324000036 Filed on May 08, 2024

Income Statement

Concept	2024 Q2	2024 Q1
Revenue	$70.96M	$68.17M
YoY Change	22.09%	31.0%
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	$1.980M	$1.866M
YoY Change	6.45%	76.37%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$5.993M	$5.610M
YoY Change	64.28%	-204.88%
Income Tax	$218.0K	$429.0K
% Of Pretax Income	3.64%	7.65%
Net Earnings	$5.775M	$5.181M
YoY Change	48.76%	-271.73%
Net Earnings / Revenue	8.14%	7.6%
Basic Earnings Per Share	$0.67	$0.60
Diluted Earnings Per Share	$0.67	$0.59
COMMON SHARES
Basic Shares Outstanding	8.656M shares	8.656M shares
Diluted Shares Outstanding	8.656M shares	8.750M shares

Balance Sheet

Concept	2024 Q2	2024 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$396.8M	$481.3M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$72.52M	$73.23M
YoY Change	-1.37%	-1.37%
Goodwill	$4.700M	$4.700M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$5.343B	$5.341B
YoY Change	8.01%	13.12%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.419M	$3.382M
YoY Change	2.43%	30.48%
Accrued Expenses	$14.02M	$16.93M
YoY Change	-9.32%	-20.63%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$17.43M	$20.31M
YoY Change	-7.24%	-15.1%
LONG-TERM LIABILITIES
Long-Term Debt	$105.0M	$104.9M
YoY Change	0.3%	0.29%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$105.0M	$104.9M
YoY Change	0.3%	0.29%
TOTAL LIABILITIES
Total Short-Term Liabilities	$17.43M	$20.31M
Total Long-Term Liabilities	$105.0M	$104.9M
Total Liabilities	$4.971B	$4.974B
YoY Change	8.24%	13.93%
SHAREHOLDERS EQUITY
Retained Earnings	$217.4M	$212.1M
YoY Change	8.16%	7.34%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$372.0M	$366.7M
YoY Change
Total Liabilities & Shareholders Equity	$5.343B	$5.341B
YoY Change	8.01%	13.12%

Cashflow Statement

Concept	2024 Q2	2024 Q1
OPERATING ACTIVITIES
Net Income	$5.775M	$5.181M
YoY Change	48.76%	-271.73%
Depreciation, Depletion And Amortization	$1.980M	$1.866M
YoY Change	6.45%	76.37%
Cash From Operating Activities	$16.02M	$2.791M
YoY Change	-249.18%	-52.68%
INVESTING ACTIVITIES
Capital Expenditures	$556.0K	$940.0K
YoY Change	29.91%	-65.24%
Acquisitions
YoY Change
Other Investing Activities	-$99.57M	$7.240M
YoY Change	77.6%	450.57%
Cash From Investing Activities	-$100.1M	-$93.27M
YoY Change	77.24%	-29.64%
FINANCING ACTIVITIES
Cash Dividend Paid		$519.0K
YoY Change		-5.29%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-379.0K	$165.8M
YoY Change	-100.17%	-4.74%
NET CHANGE
Cash From Operating Activities	16.02M	$2.791M
Cash From Investing Activities	-100.1M	-$93.27M
Cash From Financing Activities	-379.0K	$165.8M
Net Change In Cash	-84.48M	$75.37M
YoY Change	-152.26%	58.93%
FREE CASH FLOW
Cash From Operating Activities	$16.02M	$2.791M
Capital Expenditures	$556.0K	$940.0K
Free Cash Flow	$15.47M	$1.851M
YoY Change	-238.49%	-42.05%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q1	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-112000	usd
CY2022	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2024#AccountingStandardsUpdate201613Member
CY2024Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2024Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	5694000	usd
CY2023Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3606000	usd
CY2024Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	969000	usd
CY2023Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	798000	usd
CY2024Q1	us-gaap	Interest Income Other InterestIncomeOther	6067000	usd
CY2023Q1	us-gaap	Interest Income Other InterestIncomeOther	3786000	usd
CY2024Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	68165000	usd
CY2023Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	52033000	usd
CY2024Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	42129000	usd
CY2023Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	27270000	usd
CY2024Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	5302000	usd
CY2023Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	5189000	usd
CY2024Q1	us-gaap	Interest Expense Operating InterestExpenseOperating	47431000	usd
CY2023Q1	us-gaap	Interest Expense Operating InterestExpenseOperating	32459000	usd
CY2024Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	20734000	usd
CY2023Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	19574000	usd
CY2024Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2582000	usd
CY2023Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	9373000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	-62000	usd
CY2023Q1	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2024Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-72000	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	42000	usd
CY2024Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	18286000	usd
CY2023Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	10159000	usd
CY2024Q1	us-gaap	Gain Loss On Sale Of Other Loans And Leases GainLossOnSaleOfOtherLoansAndLeases	6536000	usd
CY2023Q1	us-gaap	Gain Loss On Sale Of Other Loans And Leases GainLossOnSaleOfOtherLoansAndLeases	4061000	usd
CY2024Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	702000	usd
CY2023Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	370000	usd
CY2024Q1	us-gaap	Noninterest Income NoninterestIncome	8347000	usd
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	5446000	usd
CY2024Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11796000	usd
CY2023Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11794000	usd
CY2024Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	736000	usd
CY2023Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	844000	usd
CY2024Q1	us-gaap	Professional Fees ProfessionalFees	853000	usd
CY2023Q1	us-gaap	Professional Fees ProfessionalFees	926000	usd
CY2024Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	564000	usd
CY2023Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	659000	usd
CY2024Q1	us-gaap	Loan Processing Fee LoanProcessingFee	1445000	usd
CY2023Q1	us-gaap	Loan Processing Fee LoanProcessingFee	1977000	usd
CY2024Q1	us-gaap	Occupancy Net OccupancyNet	2826000	usd
CY2023Q1	us-gaap	Occupancy Net OccupancyNet	2777000	usd
CY2024Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1145000	usd
CY2023Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	543000	usd
CY2024Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1658000	usd
CY2023Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1434000	usd
CY2024Q1	us-gaap	Noninterest Expense NoninterestExpense	21023000	usd
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	20954000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5610000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-5349000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	429000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2332000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	5181000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-3017000	usd
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.33
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.33
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8679429	shares
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9024072	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8750297	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9024072	shares
CY2024Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	5181000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-3017000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	-2074000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	5112000	usd
CY2024Q1	inbk	Other Comprehensive Income Loss Tax On Available For Sale Securities OtherComprehensiveIncomeLossTaxOnAvailableForSaleSecurities	-475000	usd
CY2023Q1	inbk	Other Comprehensive Income Loss Tax On Available For Sale Securities OtherComprehensiveIncomeLossTaxOnAvailableForSaleSecurities	1170000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-234000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-158000	usd
CY2024Q1	inbk	Other Comprehensive Income Loss Tax On Held To Maturity Securities OtherComprehensiveIncomeLossTaxOnHeldToMaturitySecurities	57000	usd
CY2023Q1	inbk	Other Comprehensive Income Loss Tax On Held To Maturity Securities OtherComprehensiveIncomeLossTaxOnHeldToMaturitySecurities	46000	usd
CY2024Q1	inbk	Oci Debt Securities Held To Maturity Gain Loss After Adjustment And Tax OCIDebtSecuritiesHeldToMaturityGainLossAfterAdjustmentAndTax	177000	usd
CY2023Q1	inbk	Oci Debt Securities Held To Maturity Gain Loss After Adjustment And Tax OCIDebtSecuritiesHeldToMaturityGainLossAfterAdjustmentAndTax	112000	usd
CY2024Q1	inbk	Other Comprehensive Income Loss Availableforsale Securities Net Unrealized Holding Gains Losses Other Than Temporary Impairments Recognizedin Income OtherComprehensiveIncomeLossAvailableforsaleSecuritiesNetUnrealizedHoldingGainsLossesOtherThanTemporaryImpairmentsRecognizedinIncome	902000	usd
CY2023Q1	inbk	Other Comprehensive Income Loss Availableforsale Securities Net Unrealized Holding Gains Losses Other Than Temporary Impairments Recognizedin Income OtherComprehensiveIncomeLossAvailableforsaleSecuritiesNetUnrealizedHoldingGainsLossesOtherThanTemporaryImpairmentsRecognizedinIncome	-2170000	usd
CY2024Q1	inbk	Other Comprehensive Income Loss Tax On Cash Flow Hedges OtherComprehensiveIncomeLossTaxOnCashFlowHedges	207000	usd
CY2023Q1	inbk	Other Comprehensive Income Loss Tax On Cash Flow Hedges OtherComprehensiveIncomeLossTaxOnCashFlowHedges	-499000	usd
CY2024Q1	inbk	Oci Debt Securities Cash Flow Hedge Gain Loss After Adjustment And Tax OCIDebtSecuritiesCashFlowHedgeGainLossAfterAdjustmentAndTax	695000	usd
CY2023Q1	inbk	Oci Debt Securities Cash Flow Hedge Gain Loss After Adjustment And Tax OCIDebtSecuritiesCashFlowHedgeGainLossAfterAdjustmentAndTax	-1671000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-727000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2383000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4454000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-634000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	362795000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	5181000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-727000	usd
CY2024Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2024Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	530000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	443000	usd
CY2024Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	10500	shares
CY2024Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	283000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Stock Dividend StockIssuedDuringPeriodValueStockDividend	2000	usd
CY2024Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	142000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	366739000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	364974000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-3017000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2383000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	544000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	372000	usd
CY2023Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	161691	shares
CY2023Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	4002000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Stock Dividend StockIssuedDuringPeriodValueStockDividend	3000	usd
CY2023Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	106000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	355572000	usd
CY2024Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1866000	usd
CY2023Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1058000	usd
CY2024Q1	inbk	Increase Decrease In Cash Surrender Value Of Life Insurance IncreaseDecreaseInCashSurrenderValueOfLifeInsurance	-272000	usd
CY2023Q1	inbk	Increase Decrease In Cash Surrender Value Of Life Insurance IncreaseDecreaseInCashSurrenderValueOfLifeInsurance	-246000	usd
CY2024Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	2448000	usd
CY2023Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	9415000	usd
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	443000	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	372000	usd
CY2024Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	80454000	usd
CY2023Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	91789000	usd
CY2024Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	84826000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	98433000	usd
CY2024Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	6536000	usd
CY2023Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	4525000	usd
CY2024Q1	inbk	Unrealized Gain Loss On Loans Held For Sale UnrealizedGainLossOnLoansHeldForSale	0	usd
CY2023Q1	inbk	Unrealized Gain Loss On Loans Held For Sale UnrealizedGainLossOnLoansHeldForSale	-136000	usd
CY2024Q1	inbk	Gain Loss On Derivatives GainLossOnDerivatives	-1224000	usd
CY2023Q1	inbk	Gain Loss On Derivatives GainLossOnDerivatives	-536000	usd
CY2024Q1	inbk	Increase Decrease In Servicing Assets IncreaseDecreaseInServicingAssets	-434000	usd
CY2023Q1	inbk	Increase Decrease In Servicing Assets IncreaseDecreaseInServicingAssets	-55000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4872000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2444000	usd
CY2024Q1	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-1497000	usd
CY2023Q1	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-2086000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2791000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5898000	usd
CY2024Q1	inbk	Payments For Proceeds Loans And Leases Excluding Purchases PaymentsForProceedsLoansAndLeasesExcludingPurchases	39598000	usd
CY2023Q1	inbk	Payments For Proceeds Loans And Leases Excluding Purchases PaymentsForProceedsLoansAndLeasesExcludingPurchases	25111000	usd
CY2024Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	15891000	usd
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	9448000	usd
CY2024Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	22689000	usd
CY2023Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1411000	usd
CY2024Q1	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	6981000	usd
CY2023Q1	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	5129000	usd
CY2024Q1	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	15221000	usd
CY2023Q1	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	26572000	usd
CY2024Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	940000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2704000	usd
CY2024Q1	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	30451000	usd
CY2023Q1	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	90029000	usd
CY2024Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	7240000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1315000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-93267000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-132565000	usd
CY2024Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	206795000	usd
CY2023Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	178743000	usd
CY2024Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	519000	usd
CY2023Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	548000	usd
CY2024Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	283000	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4002000	usd
CY2024Q1	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	110000000	usd
CY2023Q1	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	110000000	usd
CY2024Q1	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	150000000	usd
CY2023Q1	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	110000000	usd
CY2024Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-151000	usd
CY2023Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-106000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	165842000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	174087000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	75366000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	47420000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	405898000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	256552000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	481264000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	303972000	usd
CY2024Q1	us-gaap	Interest Paid Net InterestPaidNet	47897000	usd
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	32782000	usd
CY2024Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	86000	usd
CY2023Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	285000	usd
CY2024Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	usd
CY2023Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	106000	usd
CY2024Q1	inbk	Cash Dividends Declared Not Paid CashDividendsDeclaredNotPaid	519000	usd
CY2023Q1	inbk	Cash Dividends Declared Not Paid CashDividendsDeclaredNotPaid	537000	usd
CY2024Q1	inbk	Securities Purchased During Period Settled In Subsequent Period SecuritiesPurchasedDuringPeriodSettledInSubsequentPeriod	3327000	usd
CY2023Q1	inbk	Securities Purchased During Period Settled In Subsequent Period SecuritiesPurchasedDuringPeriodSettledInSubsequentPeriod	8344000	usd
CY2024Q1	inbk	Number Of Wholly Owned Subsidiaries NumberOfWhollyOwnedSubsidiaries	3	subsidiary
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	5181000	usd
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8679429	shares
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9024072	shares
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.33
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	5181000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-3017000	usd
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8679429	shares
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9024072	shares
CY2024Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	70868	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8750297	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9024072	shares
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.33
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	522965000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	905000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	41439000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	482431000	usd
CY2024Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	235969000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2024Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	21749000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	214220000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	231000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	235738000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	513315000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1054000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	39514000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	474855000	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	227446000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	5000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	19879000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	207572000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	293000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	227153000	usd
CY2023Q4	inbk	Derivative Instrument Terminated Premium DerivativeInstrumentTerminatedPremium	400000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	2700000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	1100000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	2900000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	1200000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	301000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	300000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	29713000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	30124000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	73206000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	70593000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	96473000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	93124000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	199693000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	194141000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	522965000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	482431000	usd
CY2024Q1	us-gaap	Heldtomaturity Securities Debt Maturities Next Rolling Twelve Months Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost	1006000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Next Rolling Twelve Months Fair Value HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	989000	usd
CY2024Q1	us-gaap	Heldtomaturity Securities Debt Maturities Rolling Year Two Through Five Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCost	11117000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Rolling Year Two Through Five Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	10870000	usd
CY2024Q1	us-gaap	Heldtomaturity Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCost	35350000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Rolling Year Six Through Ten Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	32435000	usd
CY2024Q1	us-gaap	Heldtomaturity Securities Debt Maturities Rolling After Ten Years Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesRollingAfterTenYearsAmortizedCost	3944000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	3451000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	51417000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	47745000	usd
CY2024Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	235969000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	214220000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2024Q1	inbk	Securities Continuous Unrealized Loss Position Fair Value SecuritiesContinuousUnrealizedLossPositionFairValue	587600000	usd
CY2023Q4	inbk	Securities Continuous Unrealized Loss Position Fair Value SecuritiesContinuousUnrealizedLossPositionFairValue	578900000	usd
CY2024Q1	inbk	Available For Sale Securities Continuous Unrealized Loss Position Fair Value In Percentage AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueInPercentage	0.84
CY2023	inbk	Available For Sale Securities Continuous Unrealized Loss Position Fair Value In Percentage AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueInPercentage	0.85
CY2024Q1	inbk	Debt Securities Number Of Securities In Portfolio DebtSecuritiesNumberOfSecuritiesInPortfolio	530	security
CY2024Q1	inbk	Debt Securities Unrealized Loss Position Number Of Positions DebtSecuritiesUnrealizedLossPositionNumberOfPositions	469	security
CY2023Q4	inbk	Debt Securities Number Of Securities In Portfolio DebtSecuritiesNumberOfSecuritiesInPortfolio	512	security
CY2023Q4	inbk	Debt Securities Unrealized Loss Position Number Of Positions DebtSecuritiesUnrealizedLossPositionNumberOfPositions	434	security
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	71955000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1234000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	301448000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	40205000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	373403000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	41439000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	73884000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	720000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	302785000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	38794000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	376669000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	39514000	usd
CY2024Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	235969000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	3874570000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	3802855000	usd
CY2024Q1	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	35234000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	37365000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	3909804000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	3840220000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	40891000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	38774000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	3868913000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	3801446000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	38774000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	2582000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	533000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	68000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	40891000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	31737000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	9373000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	7257000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	64000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	36879000	usd
CY2024Q1	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	20500000	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	20900000	usd
CY2023Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3745000	usd
CY2024Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-72000	usd
CY2024Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3673000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	0	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	42000	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2546000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	99155000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	658274000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	1029701000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	463589000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	285277000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1268133000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	68680000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	1761000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	3874570000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	85000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	312000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	80000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	9000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	47000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	533000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	624674000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	1040686000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	463824000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	300968000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	362098000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	937458000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	71369000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	1778000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	3802855000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	164000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	1238000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	7420000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	1420000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	808000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	834000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	11884000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	3874570000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	3802855000	usd
CY2024Q1	us-gaap	Other Real Estate OtherRealEstate	400000	usd
CY2023Q4	us-gaap	Other Real Estate OtherRealEstate	400000	usd
CY2023Q4	inbk	Other Real Estate Owned Number Of Properties OtherRealEstateOwnedNumberOfProperties	2	property
CY2024Q1	inbk	Other Real Estate Owned Number Of Properties OtherRealEstateOwnedNumberOfProperties	2	property
CY2024Q1	inbk	Mortgage Loans In Process Of Foreclosure Number Of Loans MortgageLoansInProcessOfForeclosureNumberOfLoans	2	loan
CY2024Q1	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	500000	usd
CY2023Q4	inbk	Mortgage Loans In Process Of Foreclosure Number Of Loans MortgageLoansInProcessOfForeclosureNumberOfLoans	1	loan
CY2023Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	800000	usd
CY2024Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	15988000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	14855000	usd
CY2024Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	73231000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	73463000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	4700000	usd
CY2024Q1	us-gaap	Goodwill Goodwill	4700000	usd
CY2022Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	10567000	usd
CY2023Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	6255000	usd
CY2024Q1	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	1627000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	1112000	usd
CY2024Q1	us-gaap	Servicing Asset At Fair Value Disposals ServicingAssetAtFairValueDisposals	612000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Disposals ServicingAssetAtFairValueDisposals	339000	usd
CY2024Q1	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	178000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	284000	usd
CY2024Q1	inbk	Servicing Asset At Fair Value Loan Servicing Asset Revaluation ServicingAssetAtFairValueLoanServicingAssetRevaluation	434000	usd
CY2023Q1	inbk	Servicing Asset At Fair Value Loan Servicing Asset Revaluation ServicingAssetAtFairValueLoanServicingAssetRevaluation	55000	usd
CY2024Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	11760000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	7312000	usd
CY2023Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	22052000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	3801446000	usd
CY2023Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	3611909000	usd
CY2023Q4	us-gaap	Interest Receivable InterestReceivable	26746000	usd
CY2024Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	300000	usd
CY2024Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P0Y9M18D
CY2024Q1	inbk	Sharebased Compensation Arrangementby Sharebase Payment Award Percentageof Annual Retainer Receivedin Common Stockor Deferred Stock Rights SharebasedCompensationArrangementbySharebasePaymentAwardPercentageofAnnualRetainerReceivedinCommonStockorDeferredStockRights	1
CY2023Q4	inbk	Deferred Stock Related To Directors Deferred Stock Plan Outstanding Number DeferredStockRelatedToDirectorsDeferredStockPlanOutstandingNumber	28538000	shares
CY2024Q1	inbk	Deferred Stock Related To Directors Deferred Stock Plan Granted In Period DeferredStockRelatedToDirectorsDeferredStockPlanGrantedInPeriod	72000	shares
CY2024Q1	inbk	Deferred Stock Related To Directors Deferred Stock Plan Outstanding Number DeferredStockRelatedToDirectorsDeferredStockPlanOutstandingNumber	28610000	shares
CY2024Q1	us-gaap	Contractual Obligation ContractualObligation	726500000	usd
CY2023Q4	us-gaap	Contractual Obligation ContractualObligation	755400000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	482431000	usd
CY2024Q1	us-gaap	Servicing Asset ServicingAsset	11760000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	474855000	usd
CY2023Q4	us-gaap	Servicing Asset ServicingAsset	10567000	usd
CY2023Q4	inbk	Interest Receivable At Fair Value InterestReceivableAtFairValue	26746000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	28350000	usd
CY2023Q4	inbk	Federal Home Loan Bank Stock At Fair Value FederalHomeLoanBankStockAtFairValue	28350000	usd
CY2023Q4	us-gaap	Deposits Deposits	4066973000	usd
CY2023Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	4059447000	usd
CY2023Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	614934000	usd
CY2023Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	605366000	usd
CY2023Q4	us-gaap	Subordinated Debt SubordinatedDebt	104838000	usd
CY2023Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	102632000	usd
CY2023Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	3848000	usd
CY2024Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	481264000	usd
CY2024Q1	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	481264000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	235738000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	214220000	usd
CY2024Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	22589000	usd
CY2024Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	22589000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	3868913000	usd
CY2024Q1	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	3685416000	usd
CY2024Q1	us-gaap	Interest Receivable InterestReceivable	26809000	usd
CY2024Q1	inbk	Interest Receivable At Fair Value InterestReceivableAtFairValue	26809000	usd
CY2024Q1	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	28350000	usd
CY2024Q1	inbk	Federal Home Loan Bank Stock At Fair Value FederalHomeLoanBankStockAtFairValue	28350000	usd
CY2024Q1	us-gaap	Deposits Deposits	4273768000	usd
CY2024Q1	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	4253825000	usd
CY2024Q1	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	574936000	usd
CY2024Q1	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	564384000	usd
CY2024Q1	us-gaap	Subordinated Debt SubordinatedDebt	104915000	usd
CY2024Q1	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	104576000	usd
CY2024Q1	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	3382000	usd
CY2024Q1	inbk	Interest Payable At Fair Value InterestPayableAtFairValue	3382000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	405898000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	405898000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	227153000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	207572000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	22052000	usd
CY2023Q4	inbk	Interest Payable At Fair Value InterestPayableAtFairValue	3848000	usd
CY2023Q1	us-gaap	Payments To Purchase Mortgage Loans Held For Sale PaymentsToPurchaseMortgageLoansHeldForSale	36300000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	43500000	usd
CY2020Q2	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	46100000	usd
CY2024Q1	inbk	Cash Pledged As Collateral CashPledgedAsCollateral	6100000	usd
CY2023Q4	inbk	Cash Pledged As Collateral CashPledgedAsCollateral	5200000	usd
CY2024Q1	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	206453000	usd
CY2024Q1	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	5966000	usd
CY2023Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	201778000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	5816000	usd
CY2024Q1	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	6453000	usd
CY2024Q1	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-158000	usd
CY2023Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	1778000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-677000	usd
CY2024Q1	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	-1172000	usd
CY2024Q1	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	-234000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-938000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-211000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-727000	usd
CY2023Q1	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	2942000	usd
CY2023Q1	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	-158000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	3100000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	717000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2383000	usd
CY2024Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-234000	usd
CY2023Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-158000	usd
CY2024Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-234000	usd
CY2023Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-158000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	57000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	46000	usd
CY2024Q1	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-177000	usd

Files In Submission

Name	View Source	Status
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0001562463-24-000036-index.html	Edgar Link	pending
0001562463-24-000036.txt	Edgar Link	pending
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ex311-2024q1.htm	Edgar Link	pending
ex312-2024q1.htm	Edgar Link	pending
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2024 Q2 Form 10-Q Financial Statement

#000156246324000036 Filed on May 08, 2024

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$INBK First Internet Bancorp Stock $inbk

2024 Q2 Form 10-Q Financial Statement

#000156246324000036 Filed on May 08, 2024

Income Statement

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