$INDB
INDEPENDENT BANK CORP Stock $indb

$indb Overview Financials Valuation SEC Filings Company Website

2022 Q3 Form 10-Q Financial Statement

#000077690122000149 Filed on August 04, 2022

Income Statement

Concept	2022 Q3	2022 Q2	2022 Q1
Revenue	$170.0M	$148.1M	$140.6M
YoY Change	82.73%	53.17%	41.13%
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	$9.571M	$9.838M	$10.12M
YoY Change	16.72%	19.98%	23.4%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$7.370M	$3.262M	$3.187M
YoY Change	151.97%	-2.57%	-21.37%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$95.07M	$82.20M	$70.20M
YoY Change	75.63%	64.33%	30.86%
Income Tax	$23.17M	$20.42M	$17.11M
% Of Pretax Income	24.37%	24.84%	24.37%
Net Earnings	$71.90M	$61.78M	$53.10M
YoY Change	79.71%	64.42%	27.3%
Net Earnings / Revenue	42.3%	41.71%	37.76%
Basic Earnings Per Share	$1.57	$1.32	$1.12
Diluted Earnings Per Share	$1.568M	$1.32	$1.12
COMMON SHARES
Basic Shares Outstanding	45.90M shares	46.67M shares	47.37M shares
Diluted Shares Outstanding	45.86M shares	46.68M shares	47.39M shares

Balance Sheet

Concept	2022 Q3	2022 Q2	2022 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$4.083B	$4.411B	$4.702B
YoY Change	-5.62%
Cash & Equivalents	$936.3M	$1.476B	$1.840B
Short-Term Investments	$3.147B	$2.935B	$2.862B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$198.4M	$202.2M	$199.1M
YoY Change	60.62%	72.2%	71.72%
Goodwill	$985.1M	$985.1M	$985.1M
YoY Change	94.6%	94.6%	94.6%
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	$19.70B	$19.98B	$20.16B
YoY Change	35.57%	40.78%	46.36%
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	$112.7M	$112.7M	$112.7M
YoY Change	-13.96%	-17.14%	-20.09%
Other Long-Term Liabilities	$433.7M	$333.4M	$292.0M
YoY Change	20.48%	13.39%	1.04%
Total Long-Term Liabilities	$546.4M	$446.1M	$404.7M
YoY Change	11.29%	3.74%	-5.89%
TOTAL LIABILITIES
Total Short-Term Liabilities
Total Long-Term Liabilities	$546.4M	$446.1M	$404.7M
Total Liabilities	$16.89B	$17.11B	$17.19B
YoY Change	32.16%	37.41%	42.59%
SHAREHOLDERS EQUITY
Retained Earnings	$882.5M	$833.9M	$795.7M
YoY Change	12.03%	9.2%	7.25%
Common Stock	$454.0K	$459.0K	$472.0K
YoY Change	37.99%	39.51%	43.47%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.817B	$2.871B	$2.965B
YoY Change
Total Liabilities & Shareholders Equity	$19.70B	$19.98B	$20.16B
YoY Change	35.57%	40.78%	46.36%

Cashflow Statement

Concept	2022 Q3	2022 Q2	2022 Q1
OPERATING ACTIVITIES
Net Income	$71.90M	$61.78M	$53.10M
YoY Change	79.71%	64.42%	27.3%
Depreciation, Depletion And Amortization	$9.571M	$9.838M	$10.12M
YoY Change	16.72%	19.98%	23.4%
Cash From Operating Activities	$133.4M	$96.91M	$75.53M
YoY Change	242.11%	92.66%	11.95%
INVESTING ACTIVITIES
Capital Expenditures	-$1.866M	-$7.818M	$8.335M
YoY Change	-79.49%	73.73%	230.23%
Acquisitions
YoY Change
Other Investing Activities	-$288.4M	-$202.7M	-$275.3M
YoY Change	-44.7%	-398.6%	60.06%
Cash From Investing Activities	-$290.3M	-$210.6M	-$283.6M
YoY Change	-45.31%	-432.12%	62.55%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$1.902M
YoY Change
Debt Paid & Issued, Net			$14.06M
YoY Change			199.98%
Cash From Financing Activities	-383.1M	-250.4M	-$192.2M
YoY Change	-257.59%	-167.05%	-133.16%
NET CHANGE
Cash From Operating Activities	133.4M	96.91M	$75.53M
Cash From Investing Activities	-290.3M	-210.6M	-$283.6M
Cash From Financing Activities	-383.1M	-250.4M	-$192.2M
Net Change In Cash	-540.0M	-364.1M	-$400.3M
YoY Change	117.12%	-174.73%	-184.69%
FREE CASH FLOW
Cash From Operating Activities	$133.4M	$96.91M	$75.53M
Capital Expenditures	-$1.866M	-$7.818M	$8.335M
Free Cash Flow	$135.3M	$104.7M	$67.19M
YoY Change	181.26%	91.11%	3.47%

Facts In Submission

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	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
	dei	Document Period End Date DocumentPeriodEndDate	2022-06-30
	dei	Local Phone Number LocalPhoneNumber	878-6100
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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	dei	City Area Code CityAreaCode	(781)
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	dei	Entity Address City Or Town EntityAddressCityOrTown	Hanover,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	02339
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	dei	Entity File Number EntityFileNumber	1-9047
	dei	Entity Registrant Name EntityRegistrantName	Independent Bank Corp.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2870273
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	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-2000000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-7500000	usd
CY2022Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	144861000	usd
CY2021Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	98354000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	284293000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	196438000	usd
CY2022Q2	indb	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	5828000	usd
CY2021Q2	indb	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	3822000	usd
	indb	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	11321000	usd
	indb	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	7406000	usd
CY2022Q2	indb	Interchange And Atm Fees InterchangeAndAtmFees	4027000	usd
CY2021Q2	indb	Interchange And Atm Fees InterchangeAndAtmFees	3068000	usd
	indb	Interchange And Atm Fees InterchangeAndAtmFees	7636000	usd
CY2022Q2	indb	Fees And Commission Mortgage Banking FeesAndCommissionMortgageBanking	1042000	usd
CY2021Q2	indb	Fees And Commission Mortgage Banking FeesAndCommissionMortgageBanking	2705000	usd
CY2021Q2	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	8872000	usd
	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	18002000	usd
	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	17176000	usd
	indb	Fees And Commission Mortgage Banking FeesAndCommissionMortgageBanking	2404000	usd
	indb	Fees And Commission Mortgage Banking FeesAndCommissionMortgageBanking	8445000	usd
CY2022Q2	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1871000	usd
CY2021Q2	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1589000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3666000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2912000	usd
CY2022Q2	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	123000	usd
CY2021Q2	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	0	usd
	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	123000	usd
	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	258000	usd
CY2022Q2	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	436000	usd
CY2021Q2	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	116000	usd
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	1040000	usd
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	289000	usd
CY2022Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5242000	usd
CY2021Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	4795000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	9978000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7939000	usd
CY2022Q2	us-gaap	Noninterest Income NoninterestIncome	27898000	usd
CY2021Q2	us-gaap	Noninterest Income NoninterestIncome	24967000	usd
	us-gaap	Noninterest Income NoninterestIncome	54170000	usd
	us-gaap	Noninterest Income NoninterestIncome	50213000	usd
CY2022Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	49538000	usd
CY2021Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	42635000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	98249000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	82524000	usd
CY2022Q2	us-gaap	Occupancy Net OccupancyNet	11637000	usd
CY2021Q2	us-gaap	Occupancy Net OccupancyNet	8706000	usd
	us-gaap	Occupancy Net OccupancyNet	24939000	usd
	us-gaap	Occupancy Net OccupancyNet	17979000	usd
CY2022Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2247000	usd
CY2021Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1686000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	4619000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3351000	usd
CY2022Q2	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2021Q2	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1731000	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	7100000	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1731000	usd
CY2022Q2	indb	Software Maintenance SoftwareMaintenance	2645000	usd
CY2021Q2	indb	Software Maintenance SoftwareMaintenance	1915000	usd
	indb	Software Maintenance SoftwareMaintenance	5209000	usd
	indb	Software Maintenance SoftwareMaintenance	3885000	usd
CY2022Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1902000	usd
CY2021Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1314000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3903000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2727000	usd
CY2022Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1743000	usd
CY2021Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	775000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	3548000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1825000	usd
CY2022Q2	indb	Debit Card Expense DebitCardExpense	1861000	usd
CY2021Q2	indb	Debit Card Expense DebitCardExpense	1165000	usd
	indb	Debit Card Expense DebitCardExpense	3626000	usd
	indb	Debit Card Expense DebitCardExpense	2346000	usd
CY2022Q2	us-gaap	Professional Fees ProfessionalFees	2760000	usd
CY2021Q2	us-gaap	Professional Fees ProfessionalFees	1492000	usd
	us-gaap	Professional Fees ProfessionalFees	4510000	usd
	us-gaap	Professional Fees ProfessionalFees	3883000	usd
CY2022Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	16229000	usd
CY2021Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	11883000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	30359000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	22733000	usd
CY2022Q2	us-gaap	Noninterest Expense NoninterestExpense	90562000	usd
CY2021Q2	us-gaap	Noninterest Expense NoninterestExpense	73302000	usd
	us-gaap	Noninterest Expense NoninterestExpense	186062000	usd
	us-gaap	Noninterest Expense NoninterestExpense	142984000	usd
CY2022Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	82197000	usd
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	50019000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	152401000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	103667000	usd
CY2022Q2	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	20421000	usd
CY2021Q2	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	12447000	usd
	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	37528000	usd
	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	24384000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	61776000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	37572000	usd
	us-gaap	Net Income Loss NetIncomeLoss	114873000	usd
	us-gaap	Net Income Loss NetIncomeLoss	79283000	usd
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.32
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.14
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.44
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.40
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.32
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.14
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.44
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.40
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46665101	shares
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33033578	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47013989	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33014561	shares
CY2022Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	14096	shares
CY2021Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	21270	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	17403	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	25085	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46679197	shares
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33054848	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47031392	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33039646	shares
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	61776000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	37572000	usd
	us-gaap	Net Income Loss NetIncomeLoss	114873000	usd
	us-gaap	Net Income Loss NetIncomeLoss	79283000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-23734000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3793000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-86290000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3981000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-7649000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-1593000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-25599000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-8176000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-121000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-210000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-242000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1029000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-31262000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2410000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-111647000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-11128000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	30514000	usd
CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	39982000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3226000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	68155000	usd
CY2022Q1	us-gaap	Stockholders Equity StockholdersEquity	2965439000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	61776000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-31262000	usd
CY2022Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	23570000	usd
CY2022Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1632000	usd
CY2022Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-22000	usd
CY2022Q2	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	588000	usd
CY2022Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	103396000	usd
CY2022Q2	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	2871185000	usd
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	1715371000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	37572000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2410000	usd
CY2021Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	15859000	usd
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1610000	usd
CY2021Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-23000	usd
CY2021Q2	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	541000	usd
CY2021Q2	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	1741622000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3018449000	usd
	us-gaap	Net Income Loss NetIncomeLoss	114873000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-111647000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	47732000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2466000	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	1159000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	105298000	usd
	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	2871185000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1702685000	usd
	us-gaap	Net Income Loss NetIncomeLoss	79283000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-11128000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	31711000	usd
	indb	Stock Repurchased During Period Valueasaresultof Stock Options Exercised StockRepurchasedDuringPeriodValueasaresultofStockOptionsExercised	57000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2760000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-1243000	usd
	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	1033000	usd
	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	1741622000	usd
	us-gaap	Net Income Loss NetIncomeLoss	114873000	usd
	us-gaap	Net Income Loss NetIncomeLoss	79283000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	19957000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	16354000	usd
	indb	Change In Unamortized Net Loan Costs And Premiums ChangeInUnamortizedNetLoanCostsAndPremiums	5662000	usd
	indb	Change In Unamortized Net Loan Costs And Premiums ChangeInUnamortizedNetLoanCostsAndPremiums	15136000	usd
	indb	Accretion Of Acquired Loans AccretionOfAcquiredLoans	-578000	usd
	indb	Accretion Of Acquired Loans AccretionOfAcquiredLoans	-3422000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-2000000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-7500000	usd
	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	289000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	503000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-60000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	469000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-2077000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	864000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-426000	usd
	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	289000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	2466000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	2760000	usd
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	3666000	usd
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	2912000	usd
	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	123000	usd
	indb	Gain Realized On Life Insurance Policies GainRealizedOnLifeInsurancePolicies	258000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	12437000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	6088000	usd
	indb	Operating Lease Termination Payments OperatingLeaseTerminationPayments	0	usd
	indb	Operating Lease Termination Payments OperatingLeaseTerminationPayments	4750000	usd
	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-426000	usd
	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-1459000	usd
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-83000	usd
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	601000	usd
	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-21895000	usd
	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-31084000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-38380000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-79393000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5049000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-51289000	usd
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	57565000	usd
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	38470000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	172438000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	117753000	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	1164000	usd
	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	323000	usd
	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	1415000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	79842000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	51536000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	123289000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	438903000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	96825000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	137258000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	438643000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	274781000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-5158000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-1171000	usd
	indb	Investmentin Low Income Housing Projects InvestmentinLowIncomeHousingProjects	-13733000	usd
	indb	Investmentin Low Income Housing Projects InvestmentinLowIncomeHousingProjects	-9556000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	101000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	40102000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	218000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	576000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	83997000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-468901000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16153000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6970000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	4000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-494196000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-111117000	usd
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-219533000	usd
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-133295000	usd
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-56949000	usd
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	1127111000	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	14063000	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	9375000	usd
	indb	Net Purchasesfrom Stock Options Exercised NetPurchasesfromStockOptionsExercised	0	usd
	indb	Net Purchasesfrom Stock Options Exercised NetPurchasesfromStockOptionsExercised	57000	usd
	indb	Issuance Of Restricted Stock Awards Netof Issuance Cost IssuanceOfRestrictedStockAwardsNetofIssuanceCost	1085000	usd
	indb	Issuance Of Restricted Stock Awards Netof Issuance Cost IssuanceOfRestrictedStockAwardsNetofIssuanceCost	1243000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1159000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1033000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	105298000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	46890000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	31016000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-442659000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	953158000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-764417000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	959794000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	2240684000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	1296636000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	1476267000	usd
CY2021Q2	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	2256430000	usd
	indb	Capitalcommitmentrelatingto Low Income Housing Projectinvestmentsnoncash CapitalcommitmentrelatingtoLowIncomeHousingProjectinvestmentsnoncash	4472000	usd
	indb	Capitalcommitmentrelatingto Low Income Housing Projectinvestmentsnoncash CapitalcommitmentrelatingtoLowIncomeHousingProjectinvestmentsnoncash	34232000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8811000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5873000	usd
CY2022Q2	us-gaap	Trading Securities Debt TradingSecuritiesDebt	3600000	usd
CY2021Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	3700000	usd
CY2022Q2	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	21200000	usd
CY2022Q2	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-1450000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	23200000	usd
CY2021Q2	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	548000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-2077000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	864000	usd
CY2022Q2	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	4000	usd
CY2021Q2	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	112000	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	8000	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	141000	usd
CY2022Q2	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-1454000	usd
CY2021Q2	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	436000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-2085000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	723000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1626890000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	264000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	125205000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1501949000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1583736000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	8808000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	21396000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1571148000	usd
CY2022Q2	indb	Debt Securities Availableforsale Pastdue DebtSecuritiesAvailableforsalePastdue	0	usd
CY2021Q4	indb	Debt Securities Availableforsale Pastdue DebtSecuritiesAvailableforsalePastdue	0	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	157	holding
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1395602000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	112139000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	81646000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	13066000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1477248000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	125205000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	37	holding
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1210544000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	21197000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1000000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	199000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1211544000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	21396000	usd
CY2022Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1408189000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	355000	usd
CY2022Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	111379000	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	usd
CY2022Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1297165000	usd
CY2021Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1066818000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	12474000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	15159000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	usd
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1064133000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity90 Days Or More Past Due Still Accruing DebtSecuritiesHeldToMaturity90DaysOrMorePastDueStillAccruing	0	usd
CY2022Q2	us-gaap	Debt Securities Held To Maturity90 Days Or More Past Due Still Accruing DebtSecuritiesHeldToMaturity90DaysOrMorePastDueStillAccruing	0	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1626890000	usd
CY2022Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1501949000	usd
CY2022Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1408189000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Datewithin One Year Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDatewithinOneYearAmortizedCost	19719000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Datewithin One Year Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDatewithinOneYearFairValue	19704000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter One Through Five Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterOneThroughFiveYearsAmortizedCost	1035584000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter One Through Five Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterOneThroughFiveYearsFairValue	974653000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Five Through Ten Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterFiveThroughTenYearsAmortizedCost	973681000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Five Through Ten Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterFiveThroughTenYearsFairValue	879571000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Ten Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterTenYearsAmortizedCost	1006095000	usd
CY2022Q2	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Ten Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterTenYearsFairValue	925186000	usd
CY2022Q2	indb	Available For Sale Securities And Held To Maturity Securities Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAmortizedCost	3035079000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	2799114000	usd
CY2022Q2	indb	Callable Securities In Investment Portfolio CallableSecuritiesInInvestmentPortfolio	25800000	usd
CY2022Q2	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	876400000	usd
CY2021Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	740600000	usd
CY2022Q2	indb	Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity	0	usd
CY2021Q4	indb	Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity	0	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	144518000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	544000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	345000	usd
CY2022Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	0	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	144319000	usd
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	107549000	usd
CY2021Q2	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-481000	usd
CY2021Q2	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	289000	usd
CY2021Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-5000000	usd
CY2021Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	102357000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	146922000	usd
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-1250000	usd
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	647000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-2000000	usd
CY2022Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	144319000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	113392000	usd
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-4167000	usd
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	632000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-7500000	usd
CY2021Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	102357000	usd
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-2000000	usd
CY2022Q2	us-gaap	Interest Receivable InterestReceivable	39000000	usd
CY2021Q2	us-gaap	Interest Receivable InterestReceivable	29900000	usd
CY2022Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	144300000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	2600000	usd
	indb	Financing Receivable Allowancefor Credit Loss Period Increase Decreasebypercentage FinancingReceivableAllowanceforCreditLossPeriodIncreaseDecreasebypercentage	-0.018	rate
CY2022Q2	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	1636427000	usd
CY2022Q2	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2683269000	usd
CY2022Q2	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2070742000	usd
CY2022Q2	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1182288000	usd
CY2022Q2	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1137251000	usd
CY2022Q2	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3220493000	usd
CY2022Q2	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1739638000	usd
CY2022Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	13675764000	usd
CY2021Q2	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	1443866000	usd
CY2021Q2	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	1957578000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	1500000	usd
CY2021Q2	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1136651000	usd
CY2021Q2	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	687041000	usd
CY2021Q2	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	739884000	usd
CY2021Q2	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1644534000	usd
CY2021Q2	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1323474000	usd
CY2021Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	8938988000	usd
CY2022Q2	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
CY2022Q2	indb	Loanswithactive Deferrals LoanswithactiveDeferrals	197400000	usd
CY2021Q4	indb	Loanswithactive Deferrals LoanswithactiveDeferrals	383100000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	27820000	usd
CY2021Q4	indb	Foreclosedresidentialrealestatepropertyheldbythecreditor Foreclosedresidentialrealestatepropertyheldbythecreditor	0	usd
CY2022Q2	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	2080000	usd
CY2022Q2	indb	Finance Receivable Nonaccrualwithallowance FinanceReceivableNonaccrualwithallowance	31213000	usd
CY2022Q2	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	24702000	usd
CY2022Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	55915000	usd
CY2021Q4	indb	Finance Receivable Nonaccrualwithallowance FinanceReceivableNonaccrualwithallowance	27199000	usd
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	621000	usd
CY2022Q2	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	1700000	usd
CY2021Q4	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	2000000	usd
CY2022Q2	indb	Foreclosedresidentialrealestatepropertyheldbythecreditor Foreclosedresidentialrealestatepropertyheldbythecreditor	0	usd
CY2021Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1426000	usd
CY2022Q2	indb	Number Of Financing Receivables Thirty To Fifty Nine Days Past Due NumberOfFinancingReceivablesThirtyToFiftyNineDaysPastDue	446	loan
CY2022Q2	indb	Number Of Financing Receivables Sixty To Eighty Nine Days Past Due NumberOfFinancingReceivablesSixtyToEightyNineDaysPastDue	33	loan
CY2022Q2	indb	Number Of Financing Receivables Equal To Greater Than Ninety Days NumberOfFinancingReceivablesEqualToGreaterThanNinetyDays	61	loan
CY2021Q4	indb	Number Of Financing Receivables Total Past Due NumberOfFinancingReceivablesTotalPastDue	701	loan
CY2021Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	13587286000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2022Q2	indb	Tdrs Recorded Investment On Accrual Status TdrsRecordedInvestmentOnAccrualStatus	11734000	usd
CY2022Q2	indb	Financing Receivable Recorded Investment Trouble Debt Restructuring FinancingReceivableRecordedInvestmentTroubleDebtRestructuring	13411000	usd
CY2021Q4	indb	Number Of Financing Receivables Sixty To Eighty Nine Days Past Due NumberOfFinancingReceivablesSixtyToEightyNineDaysPastDue	60	loan
CY2021Q4	indb	Number Of Financing Receivables Equal To Greater Than Ninety Days NumberOfFinancingReceivablesEqualToGreaterThanNinetyDays	123	loan
CY2022Q2	indb	Number Of Financing Receivables Total Past Due NumberOfFinancingReceivablesTotalPastDue	540	loan
CY2022Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	13675764000	usd
CY2022Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2021Q4	indb	Number Of Financing Receivables Thirty To Fifty Nine Days Past Due NumberOfFinancingReceivablesThirtyToFiftyNineDaysPastDue	518	loan
CY2021Q4	indb	Tdrs Recorded Investment On Accrual Status TdrsRecordedInvestmentOnAccrualStatus	14635000	usd
CY2022Q2	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	1677000	usd
CY2021Q4	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	1993000	usd
CY2021Q4	indb	Financing Receivable Recorded Investment Trouble Debt Restructuring FinancingReceivableRecordedInvestmentTroubleDebtRestructuring	16628000	usd
CY2022Q2	indb	Additional Commitments To Lend To Borrower For Trouble Debt Restructuring AdditionalCommitmentsToLendToBorrowerForTroubleDebtRestructuring	144000	usd
CY2021Q4	indb	Additional Commitments To Lend To Borrower For Trouble Debt Restructuring AdditionalCommitmentsToLendToBorrowerForTroubleDebtRestructuring	190000	usd
CY2021Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	contract
CY2021Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	89000	usd
CY2021Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	89000	usd
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	8	contract
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	18301000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	18301000	usd
CY2022Q2	indb	Us Gaap Financing Receivable Troubled Debt Restructuring Increase Decrease From Modification UsGaap_FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification	14300000	usd
CY2021Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	89000	usd
	us-gaap	Financing Receivable Troubled Debt Restructuring Increase Decrease From Modification FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification	18301000	usd
	indb	Days To Be Termed As Non Accrual Loans DaysToBeTermedAsNonAccrualLoans	P90D
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
CY2022Q2	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
	us-gaap	Maximum Length Of Time Hedged In Interest Rate Cash Flow Hedge1 MaximumLengthOfTimeHedgedInInterestRateCashFlowHedge1	P6Y8M12D
CY2021Q4	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	0	usd
CY2022Q2	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	0	usd
CY2022Q2	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	122000	usd
CY2021Q2	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	305000	usd
	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-426000	usd
	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-1500000	usd
CY2022Q2	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	-278000	usd
CY2021Q2	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	4200000	usd
CY2022Q2	us-gaap	Derivative Assets DerivativeAssets	41261000	usd
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	92185000	usd
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	33838000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	321000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	12300000	usd
CY2022Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	89879000	usd
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	69246000	usd
CY2022Q2	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	8658000	usd
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	22378000	usd
CY2022Q2	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	8658000	usd
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	22378000	usd
CY2022Q2	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2022Q2	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	4000	usd
CY2022Q2	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	32603000	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	69807000	usd
CY2022Q2	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	81217000	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	13030000	usd
CY2021Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	34800000	usd
CY2022Q2	indb	Exposureto Institutional Counterparties ExposuretoInstitutionalCounterparties	72900000	usd
CY2021Q4	indb	Exposureto Institutional Counterparties ExposuretoInstitutionalCounterparties	28300000	usd
CY2022Q2	indb	Exposure To Counterparties Relating To Customer Related Positions ExposureToCounterpartiesRelatingToCustomerRelatedPositions	2000000	usd
CY2021Q4	indb	Exposure To Counterparties Relating To Customer Related Positions ExposureToCounterpartiesRelatingToCustomerRelatedPositions	62400000	usd
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	14063000	usd
CY2021Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	13989000	usd
CY2022Q2	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	1472000	usd
CY2021Q2	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	1245000	usd
	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	2868000	usd
	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	2370000	usd
CY2022Q2	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	21184000	usd
CY2021Q2	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	17467000	usd
	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	40809000	usd
	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	33564000	usd
CY2022Q2	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	6714000	usd
CY2021Q2	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	7500000	usd
	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	13361000	usd
	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	16649000	usd
CY2022Q2	us-gaap	Noninterest Income NoninterestIncome	27898000	usd
CY2021Q2	us-gaap	Noninterest Income NoninterestIncome	24967000	usd
	us-gaap	Noninterest Income NoninterestIncome	54170000	usd
	us-gaap	Noninterest Income NoninterestIncome	50213000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-10641000	usd
CY2022Q2	indb	Investment Management Income Receivable InvestmentManagementIncomeReceivable	5124000	usd
CY2021Q4	indb	Investment Management Income Receivable InvestmentManagementIncomeReceivable	5385000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-30734000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-7000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-23734000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-112353000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-26063000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-86290000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2022Q2	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
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	2255000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-30734000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-7000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-23734000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-112353000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-26063000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-86290000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-7126000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-2004000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-5122000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-27606000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-7772000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-19834000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	3515000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	988000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	2527000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	8020000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	5765000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-35626000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-10027000	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	19000	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	5000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-2992000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-7649000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-25599000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-158000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-44000	usd
CY2022Q2	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	-317000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-89000	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	-228000	usd
CY2022Q2	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	9000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	2000	usd
CY2022Q2	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 Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1271000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3981000	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	14000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-336000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-94000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-167000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-46000	usd
CY2022Q2	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 Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-242000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-41208000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-9946000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31262000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-147643000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-35996000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-111647000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	5109000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1316000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	3793000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-5252000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	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 Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	653000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2021Q2	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 Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
CY2021Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	5109000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	1316000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	3793000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-5252000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-1271000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-3981000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	2481000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	697000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1784000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-2298000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-647000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-1651000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	4698000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	1321000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	3377000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	9078000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	2553000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	6525000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-2217000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-624000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-1593000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-11376000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-3200000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-8176000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	0	usd
CY2021Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	0	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-249000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-179000	usd
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	184000	usd
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	469000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-70000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-691000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-194000	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	-497000	usd
CY2021Q2	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	43000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	12000	usd
CY2021Q2	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	31000	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	87000	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	24000	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	63000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-292000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-82000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-210000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1431000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-402000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1029000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	3184000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	774000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2410000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-15197000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-4069000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11128000	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	-111647000	usd
CY2022Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-109464000	usd
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	40695000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-11128000	usd
CY2021Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	29567000	usd
	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	4400000	usd
CY2022Q2	indb	Original Investmentin Low Income Housing Projects OriginalInvestmentinLowIncomeHousingProjects	183953000	usd
CY2021Q4	indb	Original Investmentin Low Income Housing Projects OriginalInvestmentinLowIncomeHousingProjects	179481000	usd
CY2022Q2	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	133086000	usd
CY2021Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	135497000	usd
CY2022Q2	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	64241000	usd
CY2021Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	73336000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	17477000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	14198000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	13968000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	11892000	usd
	us-gaap	Income Loss From Affordable Housing Projects Equity Method Investments IncomeLossFromAffordableHousingProjectsEquityMethodInvestments	3509000	usd
	us-gaap	Income Loss From Affordable Housing Projects Equity Method Investments IncomeLossFromAffordableHousingProjectsEquityMethodInvestments	2306000	usd
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31

Files In Submission

Name	View Source	Status
0000776901-22-000149-index-headers.html	Edgar Link	pending
0000776901-22-000149-index.html	Edgar Link	pending
0000776901-22-000149.txt	Edgar Link	pending
0000776901-22-000149-xbrl.zip	Edgar Link	pending
exhibit311-indb0630202210x.htm	Edgar Link	pending
exhibit312-indb06x30x20221.htm	Edgar Link	pending
exhibit321-indb06x30x20221.htm	Edgar Link	pending
exhibit322-indb06x30x20221.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
indb-20220630.htm	Edgar Link	pending
indb-20220630.xsd	Edgar Link	pending
indb-20220630_cal.xml	Edgar Link	unprocessable
indb-20220630_def.xml	Edgar Link	unprocessable
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indb-20220630_g9.jpg	Edgar Link	pending
indb-20220630_htm.xml	Edgar Link	completed
indb-20220630_lab.xml	Edgar Link	unprocessable
indb-20220630_pre.xml	Edgar Link	unprocessable
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$INDB
INDEPENDENT BANK CORP Stock $indb

2022 Q3 Form 10-Q Financial Statement

#000077690122000149 Filed on August 04, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INDB INDEPENDENT BANK CORP Stock $indb

2022 Q3 Form 10-Q Financial Statement

#000077690122000149 Filed on August 04, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INDB
INDEPENDENT BANK CORP Stock $indb