$INDB
INDEPENDENT BANK CORP Stock $indb

$indb Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000077690123000225 Filed on November 02, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue		$202.9M
YoY Change		19.39%
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	$8.502M	$9.200M
YoY Change	-8.29%	-3.88%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$53.05M
YoY Change		619.78%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$70.92M	$80.14M
YoY Change	-29.29%	-15.7%
Income Tax	$16.11M	$19.30M
% Of Pretax Income	22.72%	24.08%
Net Earnings	$54.80M	$60.81M
YoY Change	-28.87%	-15.42%
Net Earnings / Revenue		29.97%
Basic Earnings Per Share		$1.38
Diluted Earnings Per Share	$1.26	$1.38
COMMON SHARES
Basic Shares Outstanding	43.85M shares	44.14M shares
Diluted Shares Outstanding		44.15M shares

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.155B	$3.194B
YoY Change	-9.39%	-21.78%
Cash & Equivalents	$224.3M	$220.1M
Short-Term Investments	$2.931B	$2.974B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$193.0M	$191.6M
YoY Change	-1.76%	-3.45%
Goodwill	$985.1M	$985.1M
YoY Change	0.0%	0.0%
Intangibles	$18.19M
YoY Change	-27.44%
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	$19.35B	$19.37B
YoY Change	0.28%	-1.7%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt	$112.8M	$112.8M
YoY Change	0.09%	0.09%
Other Long-Term Liabilities	$368.2M	$423.0M
YoY Change	-11.3%	-2.47%
Total Long-Term Liabilities	$481.0M	$112.8M
YoY Change	-8.87%	-79.35%
TOTAL LIABILITIES
Total Short-Term Liabilities
Total Long-Term Liabilities	$481.0M	$112.8M
Total Liabilities	$16.45B	$16.48B
YoY Change	0.27%	-2.39%
SHAREHOLDERS EQUITY
Retained Earnings	$1.077B	$1.046B
YoY Change	15.31%	18.56%
Common Stock	$427.0K	$440.0K
YoY Change	-6.15%	-3.08%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.895B	$2.885B
YoY Change
Total Liabilities & Shareholders Equity	$19.35B	$19.37B
YoY Change	0.28%	-1.7%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	$54.80M	$60.81M
YoY Change	-28.87%	-15.42%
Depreciation, Depletion And Amortization	$8.502M	$9.200M
YoY Change	-8.29%	-3.88%
Cash From Operating Activities	$53.49M	$81.30M
YoY Change	-53.62%	-39.07%
INVESTING ACTIVITIES
Capital Expenditures	$6.344M	$2.900M
YoY Change	56.53%	-255.41%
Acquisitions
YoY Change
Other Investing Activities	$25.59M	-$53.40M
YoY Change	-112.08%	-81.49%
Cash From Investing Activities	$19.25M	-$56.30M
YoY Change	-108.91%	-80.61%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-68.55M	-113.1M
YoY Change	-85.8%	-70.48%
NET CHANGE
Cash From Operating Activities	53.49M	81.30M
Cash From Investing Activities	19.25M	-56.30M
Cash From Financing Activities	-68.55M	-113.1M
Net Change In Cash	4.197M	-88.10M
YoY Change	-100.72%	-83.68%
FREE CASH FLOW
Cash From Operating Activities	$53.49M	$81.30M
Capital Expenditures	$6.344M	$2.900M
Free Cash Flow	$47.15M	$78.40M
YoY Change	-57.63%	-42.05%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	415089000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	16407473000	usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2023Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	45641238	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	135712	shares
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	455000	usd
CY2022Q4	indb	Shares Held In Rabbi Trust At Cost SharesHeldInRabbiTrustAtCost	80965	shares
CY2022Q4	us-gaap	Common Stock Issued Employee Stock Trust CommonStockIssuedEmployeeStockTrust	3227000	usd
	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	413770000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	34567000	usd
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	3492000	usd
	us-gaap	Interest Expense InterestExpense	13819000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	444894000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1000000	usd
	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	26438000	usd
	indb	Fees And Commission Mortgage Banking FeesAndCommissionMortgageBanking	2989000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	5549000	usd
	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	600000	usd
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	1511000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	15729000	usd
	us-gaap	Noninterest Income NoninterestIncome	82365000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	150957000	usd
	us-gaap	Professional Fees ProfessionalFees	6765000	usd
	us-gaap	Professional Fees ProfessionalFees	7057000	usd
CY2023Q3	indb	Software Maintenance SoftwareMaintenance	3324000	usd
CY2022Q3	indb	Software Maintenance SoftwareMaintenance	2497000	usd
	indb	Software Maintenance SoftwareMaintenance	9407000	usd
	indb	Software Maintenance SoftwareMaintenance	7706000	usd
CY2023Q3	indb	Debit Card Expense DebitCardExpense	2319000	usd
CY2022Q3	indb	Debit Card Expense DebitCardExpense	1936000	usd
	indb	Debit Card Expense DebitCardExpense	6707000	usd
CY2023Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1712000	usd
CY2022Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1898000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5243000	usd
CY2023Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2727000	usd
CY2022Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1677000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	8011000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	5225000	usd
CY2023Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2022Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	7100000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	45249000	usd
	us-gaap	Noninterest Expense NoninterestExpense	278790000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	247469000	usd
	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	60699000	usd
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.01
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.00
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46618209	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	17221	shares
	us-gaap	Net Income Loss NetIncomeLoss	186770000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-128872000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-52743000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-363000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-181252000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5518000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	2854914000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	60808000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7811000	usd
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24277000	usd
	us-gaap	Net Income Loss NetIncomeLoss	184699000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	27575000	usd
	indb	Accretion Of Acquired Loans AccretionOfAcquiredLoans	1057000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	17750000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	13000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	272000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-304000	usd
	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	193000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	4721000	usd
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	5786000	usd
	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	2111000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	10381000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-742000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-34000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-329000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-742000	usd
	us-gaap	Debt Securities Available For Sale Accrued Interest Writeoff DebtSecuritiesAvailableForSaleAccruedInterestWriteoff	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Accrued Interest Writeoff DebtSecuritiesAvailableForSaleAccruedInterestWriteoff	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Accrued Interest Writeoff DebtSecuritiesHeldToMaturityAccruedInterestWriteoff	0	usd
	us-gaap	Debt Securities Held To Maturity Accrued Interest Writeoff DebtSecuritiesHeldToMaturityAccruedInterestWriteoff	0	usd
	us-gaap	Held To Maturity Securities Sold Security Realized Gain Loss HeldToMaturitySecuritiesSoldSecurityRealizedGainLoss	0	usd
	us-gaap	Held To Maturity Securities Sold Security Realized Gain Loss HeldToMaturitySecuritiesSoldSecurityRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	0	usd
CY2022Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	0	usd
CY2022Q4	us-gaap	Subordinated Debt SubordinatedDebt	49885000	usd
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	113377000	usd
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	44141973	shares
CY2022Q4	us-gaap	Compensation And Benefits Trust CompensationAndBenefitsTrust	3227000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2114888000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	934442000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-163084000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2886701000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	19294174000	usd
	indb	Non Taxable Interest And Dividends On Securities NonTaxableInterestAndDividendsOnSecurities	4000	usd
	us-gaap	Interest And Fee Income Loans And Leases Held For Sale InterestAndFeeIncomeLoansAndLeasesHeldForSale	150000	usd
	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	10222000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	458713000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	10327000	usd
	us-gaap	Occupancy Net OccupancyNet	37255000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6878000	usd
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46635430	shares
CY2023Q3	indb	Stock Repurchased During Period Valueasaresultof Stock Options Exercised StockRepurchasedDuringPeriodValueasaresultofStockOptionsExercised	1000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1128000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-26000	usd
CY2023Q3	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	2871185000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	71897000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-69605000	usd
CY2022Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	23251000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1017000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	606000	usd
CY2022Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	34648000	usd
CY2022Q3	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2886701000	usd
	us-gaap	Net Income Loss NetIncomeLoss	184699000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2338000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	72875000	usd
	indb	Stock Repurchased During Period Valueasaresultof Stock Options Exercised StockRepurchasedDuringPeriodValueasaresultofStockOptionsExercised	81000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4721000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-1136000	usd
	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	1990000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	121111000	usd
	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3018449000	usd
	us-gaap	Net Income Loss NetIncomeLoss	186770000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-181252000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	70983000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3483000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-1085000	usd
	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	1765000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	139946000	usd
	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	2817201000	usd
CY2023Q3	us-gaap	Sales And Excise Tax Payable Current And Noncurrent SalesAndExciseTaxPayableCurrentAndNoncurrent	1200000	usd
	us-gaap	Net Income Loss NetIncomeLoss	186770000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	29528000	usd
	indb	Change In Unamortized Net Loan Costs And Premiums ChangeInUnamortizedNetLoanCostsAndPremiums	1199000	usd
	indb	Change In Unamortized Net Loan Costs And Premiums ChangeInUnamortizedNetLoanCostsAndPremiums	6397000	usd
	indb	Accretion Of Acquired Loans AccretionOfAcquiredLoans	65000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	271000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-2819000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-217000	usd
	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	433000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	3483000	usd
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	5549000	usd
	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	600000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	15867000	usd
	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-620000	usd
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-182000	usd
	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-18959000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-32252000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	58669000	usd
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	119089000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	305859000	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	30000	usd
	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	440000	usd
	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	471000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	42087000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	100790000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	123289000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	114698000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	132997000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	763987000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	38660000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-6189000	usd
	indb	Investmentin Low Income Housing Projects InvestmentinLowIncomeHousingProjects	-20086000	usd
	indb	Investmentin Low Income Housing Projects InvestmentinLowIncomeHousingProjects	-14896000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	114000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	115000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	3934000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2273000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	322904000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	107211000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9541000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	18019000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	104000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1228000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-230922000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-784481000	usd
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	816896000	usd
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-351458000	usd
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-1636503000	usd
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-225519000	usd
	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	887000000	usd
	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-25000000	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	14063000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	80000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
	indb	Issuance Of Restricted Stock Awards Netof Issuance Cost IssuanceOfRestrictedStockAwardsNetofIssuanceCost	1143000	usd
	indb	Issuance Of Restricted Stock Awards Netof Issuance Cost IssuanceOfRestrictedStockAwardsNetofIssuanceCost	1085000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1977000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1765000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	119951000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	139946000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	73728000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	70460000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-125372000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-825766000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-132805000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1304388000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	352933000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2240684000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	220128000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	936296000	usd
	indb	Capitalcommitmentrelatingto Low Income Housing Projectinvestmentsnoncash CapitalcommitmentrelatingtoLowIncomeHousingProjectinvestmentsnoncash	15718000	usd
	indb	Capitalcommitmentrelatingto Low Income Housing Projectinvestmentsnoncash CapitalcommitmentrelatingtoLowIncomeHousingProjectinvestmentsnoncash	4408000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5747000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	14124000	usd
CY2023Q3	us-gaap	Trading Securities Debt TradingSecuritiesDebt	4500000	usd
CY2022Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	3900000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	21500000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	21100000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-363000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	272000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-2819000	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-33000	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	8000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	305000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-2827000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1524555000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	170813000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1353744000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1566779000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	54000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	167679000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1399154000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	3900000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	3600000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Accrued Interest Writeoff DebtSecuritiesAvailableForSaleAccruedInterestWriteoff	0	usd
	us-gaap	Debt Securities Available For Sale Accrued Interest Writeoff DebtSecuritiesAvailableForSaleAccruedInterestWriteoff	0	usd
CY2023Q3	indb	Debt Securities Availableforsale Nonaccrual DebtSecuritiesAvailableforsaleNonaccrual	0	usd
CY2022Q4	indb	Debt Securities Availableforsale Nonaccrual DebtSecuritiesAvailableforsaleNonaccrual	0	usd
CY2022Q4	indb	Debt Securities Availableforsale Pastdue DebtSecuritiesAvailableforsalePastdue	0	usd
CY2023Q3	indb	Debt Securities Availableforsale Pastdue DebtSecuritiesAvailableforsalePastdue	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	183	holding
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	5896000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	112000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1347368000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	170701000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1353264000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	170813000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	173	holding
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	333099000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	35411000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1062964000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	132268000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1396063000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	167679000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1594279000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	5000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	209854000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1384430000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1705120000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	729000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	181139000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1524710000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	4600000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	4400000	usd
	us-gaap	Debt Securities Held To Maturity Accrued Interest Writeoff DebtSecuritiesHeldToMaturityAccruedInterestWriteoff	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Accrued Interest Writeoff DebtSecuritiesHeldToMaturityAccruedInterestWriteoff	0	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest90 Days Or More Past Due Still Accruing DebtSecuritiesHeldToMaturityExcludingAccruedInterest90DaysOrMorePastDueStillAccruing	0	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Nonaccrual DebtSecuritiesHeldToMaturityExcludingAccruedInterestNonaccrual	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest90 Days Or More Past Due Still Accruing DebtSecuritiesHeldToMaturityExcludingAccruedInterest90DaysOrMorePastDueStillAccruing	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Nonaccrual DebtSecuritiesHeldToMaturityExcludingAccruedInterestNonaccrual	0	usd
CY2022Q3	us-gaap	Held To Maturity Securities Sold Security Realized Gain Loss HeldToMaturitySecuritiesSoldSecurityRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Held To Maturity Securities Sold Security Realized Gain Loss HeldToMaturitySecuritiesSoldSecurityRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1524555000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1353744000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1594279000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Datewithin One Year Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDatewithinOneYearAmortizedCost	207026000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Datewithin One Year Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDatewithinOneYearFairValue	202457000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter One Through Five Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterOneThroughFiveYearsAmortizedCost	1406657000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter One Through Five Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterOneThroughFiveYearsFairValue	1263225000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Five Through Ten Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterFiveThroughTenYearsAmortizedCost	544151000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Five Through Ten Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterFiveThroughTenYearsFairValue	458222000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Ten Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterTenYearsAmortizedCost	961000000	usd
CY2023Q3	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Ten Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterTenYearsFairValue	814270000	usd
CY2023Q3	indb	Available For Sale Securities And Held To Maturity Securities Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAmortizedCost	3118834000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	2738174000	usd
CY2023Q3	indb	Callable Securities In Investment Portfolio CallableSecuritiesInInvestmentPortfolio	24700000	usd
CY2023Q3	indb	Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity	0	usd
CY2022Q4	indb	Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity	0	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	140647000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	6018000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	440000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5500000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	140569000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	144319000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	741000	usd
CY2022Q3	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	736000	usd
CY2022Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	3000000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	147313000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	152419000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	30600000	usd
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1000000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	17750000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	140569000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	146922000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1992000	usd
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1383000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1000000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	147313000	usd
CY2023Q3	us-gaap	Interest Receivable InterestReceivable	58100000	usd
CY2022Q3	us-gaap	Interest Receivable InterestReceivable	42700000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	140600000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	152400000	usd
CY2023Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	1825140000	usd
CY2023Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2677047000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2247195000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1690252000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	841526000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3214966000	usd
CY2023Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1722920000	usd
CY2023Q3	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	5189000	usd
CY2023Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	14224235000	usd
	us-gaap	Financing Receivable Year One Originated Current Fiscal Year Writeoff FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff	1836000	usd
	us-gaap	Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	5072000	usd
	us-gaap	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	22000	usd
	us-gaap	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	37000	usd
	us-gaap	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	41000	usd
	us-gaap	Financing Receivable Revolving Writeoff FinancingReceivableRevolvingWriteoff	23592000	usd
	us-gaap	Financing Receivable Revolving Converted To Term Loan Writeoff FinancingReceivableRevolvingConvertedToTermLoanWriteoff	0	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	30600000	usd
CY2022Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	2347498000	usd
CY2022Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2617135000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1958359000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1065396000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1069133000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	2968288000	usd
CY2022Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1666287000	usd
CY2022Q3	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	8254000	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	13700350000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	1500000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	1300000	usd
	indb	Days To Be Termed As Non Accrual Loans DaysToBeTermedAsNonAccrualLoans	P90D
	indb	Days To Be Termed As Non Accrual Loans DaysToBeTermedAsNonAccrualLoans	P90D
CY2023Q3	indb	Finance Receivable Nonaccrualwithallowance FinanceReceivableNonaccrualwithallowance	27177000	usd
CY2023Q3	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	11991000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	39168000	usd
CY2022Q4	indb	Finance Receivable Nonaccrualwithallowance FinanceReceivableNonaccrualwithallowance	51809000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	3072000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	54881000	usd
CY2022Q4	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	11500000	usd
CY2023Q3	indb	Foreclosedresidentialrealestatepropertyheldbythecreditor Foreclosedresidentialrealestatepropertyheldbythecreditor	110000	usd
CY2022Q4	indb	Foreclosedresidentialrealestatepropertyheldbythecreditor Foreclosedresidentialrealestatepropertyheldbythecreditor	0	usd
CY2023Q3	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1667000	usd
CY2022Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1615000	usd
CY2023Q3	indb	Number Of Financing Receivables Thirty To Fifty Nine Days Past Due NumberOfFinancingReceivablesThirtyToFiftyNineDaysPastDue	445	loan
CY2023Q3	indb	Number Of Financing Receivables Sixty To Eighty Nine Days Past Due NumberOfFinancingReceivablesSixtyToEightyNineDaysPastDue	31	loan
CY2023Q3	indb	Number Of Financing Receivables Equal To Greater Than Ninety Days NumberOfFinancingReceivablesEqualToGreaterThanNinetyDays	51	loan
CY2023Q3	indb	Number Of Financing Receivables Total Past Due NumberOfFinancingReceivablesTotalPastDue	527	loan
CY2023Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	14224235000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	3000	usd
CY2022Q4	indb	Number Of Financing Receivables Thirty To Fifty Nine Days Past Due NumberOfFinancingReceivablesThirtyToFiftyNineDaysPastDue	481	loan
CY2022Q4	indb	Number Of Financing Receivables Sixty To Eighty Nine Days Past Due NumberOfFinancingReceivablesSixtyToEightyNineDaysPastDue	35	loan
CY2022Q4	indb	Number Of Financing Receivables Equal To Greater Than Ninety Days NumberOfFinancingReceivablesEqualToGreaterThanNinetyDays	46	loan
CY2022Q4	indb	Number Of Financing Receivables Total Past Due NumberOfFinancingReceivablesTotalPastDue	562	loan
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	13928675000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2023Q3	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	6100000	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	5000000	usd
	indb	Days To Be Termed As Non Accrual Loans DaysToBeTermedAsNonAccrualLoans	P90D
CY2023Q3	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0	usd
CY2022Q4	indb	Tdrs Recorded Investment On Accrual Status TdrsRecordedInvestmentOnAccrualStatus	11278000	usd
CY2022Q4	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	11520000	usd
CY2022Q4	indb	Financing Receivable Recorded Investment Trouble Debt Restructuring FinancingReceivableRecordedInvestmentTroubleDebtRestructuring	22798000	usd
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	68000	usd
	indb	Financing Receivable Troubled Debt Restructuring Post Modification FinancingReceivableTroubledDebtRestructuringPostModification	67000	usd
CY2022Q4	indb	Additional Commitments To Lend To Borrower For Trouble Debt Restructuring AdditionalCommitmentsToLendToBorrowerForTroubleDebtRestructuring	64000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	287000000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Advances Interest Rate FederalHomeLoanBankAdvancesInterestRate	0.0557	rate
CY2023Q3	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0550	rate
CY2023Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Of Amounts Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate	0.0551	rate
CY2023Q3	indb	Federal Home Loan Bank Advances Weighted Average Interest Rate Inclusive Of Swaps FederalHomeLoanBankAdvancesWeightedAverageInterestRateInclusiveOfSwaps	0.0387	rate
CY2023Q3	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	548000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate Index Amortizing FederalHomeLoanBankAdvancesWeightedAverageInterestRateIndexAmortizing	0.0140	rate
CY2023Q3	us-gaap	Federal Home Loan Bank Advances Index Amortizing FederalHomeLoanBankAdvancesIndexAmortizing	887548000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	3800000000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	2700000000	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	1800000000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	1800000000	usd
CY2023Q3	us-gaap	Subordinated Debt SubordinatedDebt	49957000	usd
CY2022Q4	us-gaap	Subordinated Debt SubordinatedDebt	49885000	usd
CY2023Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	112814000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	112740000	usd
CY2023Q3	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	1800000	usd
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	5000000	usd
CY2022Q3	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	1200000	usd
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	3200000	usd
	us-gaap	Maximum Length Of Time Hedged In Interest Rate Cash Flow Hedge1 MaximumLengthOfTimeHedgedInInterestRateCashFlowHedge1	P5Y6M
CY2023Q3	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	0	usd
CY2022Q4	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	0	usd
CY2023Q3	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-28000	usd
CY2022Q3	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-194000	usd
	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-31000	usd
	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-620000	usd
CY2023Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	333000	usd
CY2022Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	229000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	677000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	550000	usd
CY2023Q3	us-gaap	Derivative Assets DerivativeAssets	84877000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	70174000	usd
CY2023Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	161277000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	146666000	usd
CY2023Q3	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	12399000	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	20019000	usd
CY2023Q3	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	12399000	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	20019000	usd
CY2023Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	34109000	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	17720000	usd
CY2023Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	usd
CY2023Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	38369000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	32435000	usd
CY2023Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	148878000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	126647000	usd
CY2023Q3	indb	Exposureto Institutional Counterparties ExposuretoInstitutionalCounterparties	157100000	usd
CY2022Q4	indb	Exposureto Institutional Counterparties ExposuretoInstitutionalCounterparties	121200000	usd
CY2023Q3	indb	Exposure To Counterparties Relating To Customer Related Positions ExposureToCounterpartiesRelatingToCustomerRelatedPositions	4000	usd
CY2022Q4	indb	Exposure To Counterparties Relating To Customer Related Positions ExposureToCounterpartiesRelatingToCustomerRelatedPositions	2200000	usd
CY2023Q3	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	1407000	usd
CY2022Q3	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	1782000	usd
	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	4412000	usd
	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	4650000	usd
CY2023Q3	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	22723000	usd
CY2022Q3	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	21285000	usd
	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	66963000	usd
	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	62094000	usd
CY2023Q3	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	10820000	usd
CY2022Q3	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	6910000	usd
	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	25579000	usd
	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	20271000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	33543000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	28195000	usd
	us-gaap	Noninterest Income NoninterestIncome	92542000	usd
	us-gaap	Noninterest Income NoninterestIncome	82365000	usd
CY2023Q3	indb	Investment Management Income Receivable InvestmentManagementIncomeReceivable	5291000	usd
CY2022Q4	indb	Investment Management Income Receivable InvestmentManagementIncomeReceivable	5261000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-10378000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2457000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7921000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-3186000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-882000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-2304000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-10378000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-2457000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-7921000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-3186000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-882000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2304000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-7266000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-2043000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-5223000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-13966000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-3927000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-10039000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-7547000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-2122000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-5425000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-20806000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-5850000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-14956000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	281000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	79000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	202000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	6840000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	1923000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	4917000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	137000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	38000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	99000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	411000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	115000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	296000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	10000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	3000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	7000	usd
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	29000	usd
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	8000	usd
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	21000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	127000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	35000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	92000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	382000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	107000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	275000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-10224000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-2413000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7811000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	3272000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	934000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2338000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-55461000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-12879000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-42582000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-167814000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-38942000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-128872000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-55461000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-12879000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-42582000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-167814000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-38942000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-128872000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-37357000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-10505000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-26852000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-64963000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-18277000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-46686000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	407000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	115000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	292000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	8427000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	2370000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	6057000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-37764000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-10620000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-27144000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-73390000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-20647000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-52743000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-159000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-45000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-114000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-476000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-134000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-342000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	10000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	3000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	7000	usd
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	29000	usd
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	8000	usd
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	21000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-169000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-48000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-121000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-505000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-142000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-363000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-93056000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-23451000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-69605000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-240699000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-59447000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-181252000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-163084000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2338000	usd
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-160746000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2183000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-181252000	usd
CY2022Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-179069000	usd

Files In Submission

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0000776901-23-000225-index.html	Edgar Link	pending
0000776901-23-000225.txt	Edgar Link	pending
0000776901-23-000225-xbrl.zip	Edgar Link	pending
exhibit311-indb0930202310x.htm	Edgar Link	pending
exhibit312-indb09x30x20231.htm	Edgar Link	pending
exhibit321-indb09x30x20231.htm	Edgar Link	pending
exhibit322-indb09x30x20231.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
indb-20230930.htm	Edgar Link	pending
indb-20230930.xsd	Edgar Link	pending
indb-20230930_g1.jpg	Edgar Link	pending
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report.css	Edgar Link	pending
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$INDB
INDEPENDENT BANK CORP Stock $indb

2023 Q4 Form 10-Q Financial Statement

#000077690123000225 Filed on November 02, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INDB INDEPENDENT BANK CORP Stock $indb

2023 Q4 Form 10-Q Financial Statement

#000077690123000225 Filed on November 02, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INDB
INDEPENDENT BANK CORP Stock $indb