$INDB
INDEPENDENT BANK CORP Stock $indb

$indb Overview Financials Valuation SEC Filings Company Website

2019 Q1 Form 10-Q Financial Statement

#000077690119000148 Filed on May 07, 2019

Income Statement

Concept	2019 Q1	2018 Q4	2018 Q1
Revenue	$91.54M	$87.91M	$73.75M
YoY Change	24.13%	20.63%	14.5%
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	$3.600M	$3.900M	$4.200M
YoY Change	-14.29%	-7.14%	16.67%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$9.018M	$7.618M	$5.278M
YoY Change	70.86%	51.03%	25.46%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$46.75M	$38.20M	$34.38M
YoY Change	35.96%	3.24%	15.62%
Income Tax	$11.52M	$8.258M	$6.828M
% Of Pretax Income	24.65%	21.62%	19.86%
Net Earnings	$35.23M	$29.93M	$27.56M
YoY Change	27.84%	35.67%	32.96%
Net Earnings / Revenue	38.48%	34.05%	37.36%
Basic Earnings Per Share	$1.25	$1.08	$1.00
Diluted Earnings Per Share	$1.25	$1.07	$1.00
COMMON SHARES
Basic Shares Outstanding	28.11M shares	27.82M shares	27.49M shares
Diluted Shares Outstanding	28.16M shares	27.87M shares	27.55M shares

Balance Sheet

Concept	2019 Q1	2018 Q4	2018 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents
Short-Term Investments	$1.083B	$1.075B	$996.3M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$98.84M	$97.58M	$95.21M
YoY Change	3.81%	3.02%	16.08%
Goodwill	$256.1M	$506.2M	$231.8M
YoY Change	10.48%	97.66%	4.64%
Intangibles		$15.25M
YoY Change		63.26%
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	$8.997B	$8.852B	$8.090B
YoY Change	11.21%	9.52%	4.55%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$35.00M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$49.99M	$0.00	$138.0M
YoY Change	-63.77%	-100.0%	-5.48%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$35.00M		$138.0M
YoY Change	-74.64%		-5.48%
LONG-TERM LIABILITIES
Long-Term Debt	$232.0M	$110.9M	$108.0M
YoY Change	114.81%	2.92%	0.0%
Other Long-Term Liabilities	$86.00M	$92.00M	$84.00M
YoY Change	2.38%	8.24%	-2.33%
Total Long-Term Liabilities	$318.0M	$110.9M	$192.0M
YoY Change	65.63%	2.92%	-1.03%
TOTAL LIABILITIES
Total Short-Term Liabilities	$35.00M		$138.0M
Total Long-Term Liabilities	$318.0M	$110.9M	$192.0M
Total Liabilities	$7.893B	$7.778B	$7.134B
YoY Change	10.63%	8.96%	3.99%
SHAREHOLDERS EQUITY
Retained Earnings	$569.6M	$546.7M	$484.3M
YoY Change	17.62%	17.34%	13.73%
Common Stock	$280.0K	$279.0K	$273.0K
YoY Change	2.56%	2.2%	1.49%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.105B	$1.073B	$956.1M
YoY Change
Total Liabilities & Shareholders Equity	$8.997B	$8.852B	$8.090B
YoY Change	11.21%	9.52%	4.55%

Cashflow Statement

Concept	2019 Q1	2018 Q4	2018 Q1
OPERATING ACTIVITIES
Net Income	$35.23M	$29.93M	$27.56M
YoY Change	27.84%	35.67%	32.96%
Depreciation, Depletion And Amortization	$3.600M	$3.900M	$4.200M
YoY Change	-14.29%	-7.14%	16.67%
Cash From Operating Activities	$34.17M	$38.00M	$33.88M
YoY Change	0.84%	-10.59%	-9.49%
INVESTING ACTIVITIES
Capital Expenditures	$3.713M	-$3.000M	$2.803M
YoY Change	32.47%	-53.85%	-48.63%
Acquisitions
YoY Change
Other Investing Activities	-$63.00M	-$124.4M	-$66.60M
YoY Change	-5.41%	20.43%	-44.36%
Cash From Investing Activities	-$66.73M	-$127.4M	-$69.44M
YoY Change	-3.89%	16.03%	-44.53%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$74.38M	89.00M	-$12.02M
YoY Change	-719.09%	319.81%	-164.15%
NET CHANGE
Cash From Operating Activities	$34.17M	38.00M	$33.88M
Cash From Investing Activities	-$66.73M	-127.4M	-$69.44M
Cash From Financing Activities	$74.38M	89.00M	-$12.02M
Net Change In Cash	$41.82M	-400.0K	-$47.57M
YoY Change	-187.91%	-99.13%	-31.08%
FREE CASH FLOW
Cash From Operating Activities	$34.17M	$38.00M	$33.88M
Capital Expenditures	$3.713M	-$3.000M	$2.803M
Free Cash Flow	$30.46M	$41.00M	$31.08M
YoY Change	-2.01%	-16.33%	-2.81%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q1	dei	Amendment Flag AmendmentFlag	false
CY2019Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2019Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000776901
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	28137504	shares
CY2019Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2019Q1	indb	Amortization Of Deferred Hedge Gains Losses AmortizationOfDeferredHedgeGainsLosses	0	USD
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CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
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CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000	shares
CY2019Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000	shares
CY2018Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	100000	USD
CY2019Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	100000	USD
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CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2019Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
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CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	155012	shares
CY2019Q1	dei	Document Type DocumentType	10-Q
CY2019Q1	dei	Document Period End Date DocumentPeriodEndDate	2019-03-31
CY2019Q1	dei	Entity Registrant Name EntityRegistrantName	Independent Bank Corp.
CY2019Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2019Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3444000	USD
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CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	21533000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	19863000	USD
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CY2018Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	31100000	USD
CY2019Q1	us-gaap	Occupancy Net OccupancyNet	7130000	USD
CY2018Q1	us-gaap	Occupancy Net OccupancyNet	7408000	USD
CY2019Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1326000	USD
CY2018Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1286000	USD
CY2019Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	616000	USD
CY2018Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	798000	USD
CY2019Q1	us-gaap	Advertising Expense AdvertisingExpense	1213000	USD
CY2018Q1	us-gaap	Advertising Expense AdvertisingExpense	1123000	USD
CY2019Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1032000	USD
CY2018Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2019Q1	indb	Software Maintenance SoftwareMaintenance	1165000	USD
CY2018Q1	indb	Software Maintenance SoftwareMaintenance	972000	USD
CY2019Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10712000	USD
CY2018Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10764000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	56311000	USD
CY2018Q1	us-gaap	Noninterest Expense NoninterestExpense	53451000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	46747000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	34383000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11522000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6828000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	35225000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	27555000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.25
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.25
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28106184	shares
CY2018Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	27486573	shares
CY2019Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	54466	shares
CY2018Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	67381	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28160650	shares
CY2018Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27553954	shares
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	35225000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	27555000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	4729000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5468000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	3285000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	215000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-40000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-117000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8054000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5136000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	43279000	USD
CY2018Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	22419000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1073490000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	35225000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8054000	USD
CY2019Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	12379000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	165000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	915000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-1419000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	487000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	1104538000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	943809000	USD
CY2018Q1	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets1 NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	0	USD
CY2018Q1	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	0	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	27555000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5136000	USD
CY2018Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	10454000	USD
CY2018Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	143000	USD
CY2018Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1041000	USD
CY2018Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-1318000	USD
CY2018Q1	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	419000	USD
CY2018Q1	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	0	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	956059000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	35225000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	27555000	USD
CY2019Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3648000	USD
CY2018Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	4181000	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1000000	USD
CY2018Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	500000	USD
CY2019Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	539000	USD
CY2018Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	359000	USD
CY2019Q1	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	907000	USD
CY2018Q1	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-485000	USD
CY2019Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-25000	USD
CY2018Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	7000	USD
CY2018Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1000	USD
CY2019Q1	us-gaap	Sale Leaseback Transaction Current Period Gain Recognized SaleLeasebackTransactionCurrentPeriodGainRecognized	145000	USD
CY2018Q1	us-gaap	Sale Leaseback Transaction Current Period Gain Recognized SaleLeasebackTransactionCurrentPeriodGainRecognized	258000	USD
CY2019Q1	us-gaap	Share Based Compensation ShareBasedCompensation	915000	USD
CY2018Q1	us-gaap	Share Based Compensation ShareBasedCompensation	1041000	USD
CY2019Q1	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	972000	USD
CY2018Q1	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	947000	USD
CY2019Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	2165000	USD
CY2018Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	0	USD
CY2019Q1	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	1000	USD
CY2018Q1	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-26000	USD
CY2019Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	333000	USD
CY2018Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	277000	USD
CY2019Q1	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-846000	USD
CY2018Q1	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-805000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1721000	USD
CY2018Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2594000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5228000	USD
CY2018Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-2175000	USD
CY2019Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-1057000	USD
CY2018Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	6328000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	34168000	USD
CY2018Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	33883000	USD
CY2019Q1	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	105000	USD
CY2018Q1	us-gaap	Increase Decrease In Equity Securities Fv Ni IncreaseDecreaseInEquitySecuritiesFvNi	78000	USD
CY2019Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	11318000	USD
CY2018Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	11040000	USD
CY2018Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	37201000	USD
CY2019Q1	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	19003000	USD
CY2018Q1	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	22888000	USD
CY2019Q1	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	30502000	USD
CY2018Q1	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	53995000	USD
CY2019Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-8016000	USD
CY2018Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	1430000	USD
CY2019Q1	indb	Investmentin Low Income Housing Projects InvestmentinLowIncomeHousingProjects	-292000	USD
CY2018Q1	indb	Investmentin Low Income Housing Projects InvestmentinLowIncomeHousingProjects	-1213000	USD
CY2019Q1	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	93000	USD
CY2018Q1	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	93000	USD
CY2019Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	70378000	USD
CY2018Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	6856000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3713000	USD
CY2018Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2803000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	13000	USD
CY2018Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	52000	USD
CY2018Q1	us-gaap	Proceeds From Sale Of Wholly Owned Real Estate And Real Estate Acquired In Settlement Of Loans ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans	253000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-66733000	USD
CY2018Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-69436000	USD
CY2019Q1	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	12464000	USD
CY2018Q1	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	10486000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	24034000	USD
CY2018Q1	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	11804000	USD
CY2019Q1	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-122046000	USD
CY2018Q1	indb	Increase Decreasein Customer Repurchase Agreements IncreaseDecreaseinCustomerRepurchaseAgreements	-24765000	USD
CY2019Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	49993000	USD
CY2018Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2019Q1	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	74914000	USD
CY2018Q1	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	0	USD
CY2019Q1	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	3093000	USD
CY2018	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	49556000	USD
CY2018Q1	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2019Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	165000	USD
CY2018Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	143000	USD
CY2019Q1	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	-1419000	USD
CY2018Q1	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	-1318000	USD
CY2019Q1	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	487000	USD
CY2018Q1	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	419000	USD
CY2019Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	10671000	USD
CY2018Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	8784000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	74384000	USD
CY2018Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-12015000	USD
CY2019Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	41819000	USD
CY2018Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-47568000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	250455000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	213116000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	292274000	USD
CY2018Q1	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	165548000	USD
CY2019Q1	indb	Capitalcommitmentrelatingto Low Income Housing Projectinvestmentsnoncash CapitalcommitmentrelatingtoLowIncomeHousingProjectinvestmentsnoncash	0	USD
CY2018Q1	indb	Capitalcommitmentrelatingto Low Income Housing Projectinvestmentsnoncash CapitalcommitmentrelatingtoLowIncomeHousingProjectinvestmentsnoncash	9000	USD
CY2019Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	32777000	USD
CY2018Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2926000	USD
CY2018Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	32800000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	34100000	USD
CY2018Q4	us-gaap	Deferred Rent Credit DeferredRentCredit	1300000	USD
CY2019Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	1800000	USD
CY2018Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	1500000	USD
CY2019Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	20400000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	19500000	USD
CY2019Q1	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	907000	USD
CY2018Q1	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-485000	USD
CY2019Q1	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	3000	USD
CY2018Q1	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	2000	USD
CY2019Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	904000	USD
CY2018Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-487000	USD
CY2019Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	439307000	USD
CY2019Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2224000	USD
CY2019Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3842000	USD
CY2019Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	437689000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	450548000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1233000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	9029000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	442752000	USD
CY2019Q1	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	623243000	USD
CY2019Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	5574000	USD
CY2019Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	5661000	USD
CY2019Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	623156000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	611490000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2533000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	10383000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	603640000	USD
CY2019Q1	indb	Available For Sale Securities And Held To Maturity Securities Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAmortizedCost	1062550000	USD
CY2019Q1	indb	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Gains AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedGains	7798000	USD
CY2019Q1	indb	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Losses AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedLosses	9503000	USD
CY2019Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	1060845000	USD
CY2018Q4	indb	Available For Sale Securities And Held To Maturity Securities Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAmortizedCost	1062038000	USD
CY2018Q4	indb	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Gains AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedGains	3766000	USD
CY2018Q4	indb	Available For Sale Securities And Held To Maturity Securities Gross Unrealized Losses AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesGrossUnrealizedLosses	19412000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	1046392000	USD
CY2019Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	439307000	USD
CY2019Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	437689000	USD
CY2019Q1	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	623243000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Datewithin One Year Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDatewithinOneYearAmortizedCost	10012000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Datewithin One Year Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDatewithinOneYearFairValue	9972000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter One Through Five Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterOneThroughFiveYearsAmortizedCost	75869000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter One Through Five Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterOneThroughFiveYearsFairValue	75666000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Five Through Ten Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterFiveThroughTenYearsAmortizedCost	137678000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Five Through Ten Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterFiveThroughTenYearsFairValue	137965000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Ten Years Amortized Cost DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterTenYearsAmortizedCost	838991000	USD
CY2019Q1	indb	Debt Securities Availableforsaleand Heldtomaturity Maturity Allocatedand Single Maturity Dateafter Ten Years Fair Value DebtSecuritiesAvailableforsaleandHeldtomaturityMaturityAllocatedandSingleMaturityDateafterTenYearsFairValue	837242000	USD
CY2019Q1	indb	Available For Sale Securities And Held To Maturity Securities Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAmortizedCost	1062550000	USD
CY2019Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	1060845000	USD
CY2019Q1	indb	Callable Securities In Investment Portfolio CallableSecuritiesInInvestmentPortfolio	5300000	USD
CY2019Q1	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	388700000	USD
CY2018Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	361100000	USD
CY2019Q1	indb	Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity Investmentsinobligationsofindividualstatescountiesormunicipalitieswhichexceed10ofequity	0	USD
CY2019Q1	indb	Available For Sale And Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions AvailableForSaleAndHeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	162	holding
CY2019Q1	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	5796000	USD
CY2019Q1	indb	Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionforlessthan12months Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionforlessthan12months	11000	USD
CY2019Q1	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	614499000	USD
CY2019Q1	indb	Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionformorethan12months Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionformorethan12months	9492000	USD
CY2019Q1	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	620295000	USD
CY2019Q1	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Aggregate Loss AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLoss	9503000	USD
CY2018Q4	indb	Available For Sale And Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions AvailableForSaleAndHeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	205	holding
CY2018Q4	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	202901000	USD
CY2018Q4	indb	Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionforlessthan12months Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionforlessthan12months	2486000	USD
CY2018Q4	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	566107000	USD
CY2018Q4	indb	Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionformorethan12months Unrealizedlosspositionforavailableforsaleandheldtomaturitysecuritiesinacontinuouslosspositionformorethan12months	16926000	USD
CY2018Q4	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	769008000	USD
CY2018Q4	indb	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Aggregate Loss AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLoss	19412000	USD
CY2019Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Period Increase Decrease OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsPeriodIncreaseDecrease	0	USD
CY2019Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0	USD
CY2019Q1	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	6910734000	USD
CY2019Q1	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	57482000	USD
CY2019Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6976872000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	6838339000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	59060000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6906194000	USD
CY2019Q1	indb	Unamortized Loan Commitmentand Originationfees UnamortizedLoanCommitmentandOriginationfees	7300000	USD
CY2018Q4	indb	Unamortized Loan Commitmentand Originationfees UnamortizedLoanCommitmentandOriginationfees	7100000	USD
CY2019Q1	indb	Unamortized Discountsor Premiums UnamortizedDiscountsorPremiums	14300000	USD
CY2018Q4	indb	Unamortized Discountsor Premiums UnamortizedDiscountsorPremiums	15200000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	64293000	USD
CY2019Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	559000	USD
CY2019Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	406000	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1000000	USD
CY2019Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	65140000	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	64036000	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1104000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	60643000	USD
CY2018Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	593000	USD
CY2018Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	312000	USD
CY2018Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	500000	USD
CY2018Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	60862000	USD
CY2018Q1	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	59605000	USD
CY2018Q1	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1257000	USD
CY2019Q1	indb	Significant Advanced Considered For Risk Rating Change SignificantAdvancedConsideredForRiskRatingChange	50000	USD
CY2019Q1	us-gaap	Notes Receivable Net NotesReceivableNet	4944644000	USD
CY2018Q4	us-gaap	Notes Receivable Net NotesReceivableNet	4874718000	USD
CY2019Q1	indb	Days To Be Termed As Non Accrual Loans DaysToBeTermedAsNonAccrualLoans	P90D
CY2019Q1	indb	Days To Be Termed As Non Accrual Loans DaysToBeTermedAsNonAccrualLoans	P90D
CY2019Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	43326000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	45413000	USD
CY2019Q1	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	28900000	USD
CY2018Q4	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	29300000	USD
CY2019Q1	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	4186000	USD
CY2018Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	3174000	USD
CY2019Q1	indb	Number Of Financing Receivables Thirty To Fifty Nine Days Past Due NumberOfFinancingReceivablesThirtyToFiftyNineDaysPastDue	320	loan
CY2019Q1	indb	Number Of Financing Receivables Sixty To Eighty Nine Days Past Due NumberOfFinancingReceivablesSixtyToEightyNineDaysPastDue	53	loan
CY2019Q1	indb	Number Of Financing Receivables Equal To Greater Than Ninety Days NumberOfFinancingReceivablesEqualToGreaterThanNinetyDays	87	loan
CY2019Q1	indb	Number Of Financing Receivables Total Past Due NumberOfFinancingReceivablesTotalPastDue	460	loan
CY2019Q1	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	17446000	USD
CY2019Q1	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	6959426000	USD
CY2019Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6976872000	USD
CY2019Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	5000	USD
CY2018Q4	indb	Number Of Financing Receivables Thirty To Fifty Nine Days Past Due NumberOfFinancingReceivablesThirtyToFiftyNineDaysPastDue	400	loan
CY2018Q4	indb	Number Of Financing Receivables Sixty To Eighty Nine Days Past Due NumberOfFinancingReceivablesSixtyToEightyNineDaysPastDue	56	loan
CY2018Q4	indb	Number Of Financing Receivables Equal To Greater Than Ninety Days NumberOfFinancingReceivablesEqualToGreaterThanNinetyDays	110	loan
CY2018Q4	indb	Number Of Financing Receivables Total Past Due NumberOfFinancingReceivablesTotalPastDue	566	loan
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	46348000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	6859846000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	6906194000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	5000	USD
CY2019Q1	indb	Tdrs Recorded Investment On Accrual Status TdrsRecordedInvestmentOnAccrualStatus	23053000	USD
CY2018Q4	indb	Tdrs Recorded Investment On Accrual Status TdrsRecordedInvestmentOnAccrualStatus	23849000	USD
CY2019Q1	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	28908000	USD
CY2018Q4	indb	Tdrs Recorded Investment On Nonaccrual Status TdrsRecordedInvestmentOnNonaccrualStatus	29348000	USD
CY2019Q1	indb	Financing Receivable Recorded Investment Trouble Debt Restructuring FinancingReceivableRecordedInvestmentTroubleDebtRestructuring	51961000	USD
CY2018Q4	indb	Financing Receivable Recorded Investment Trouble Debt Restructuring FinancingReceivableRecordedInvestmentTroubleDebtRestructuring	53197000	USD
CY2019Q1	indb	Amount Of Specific Reserves Included In Allowance For Loan Losses Associated With Trouble Debt Restructuring AmountOfSpecificReservesIncludedInAllowanceForLoanLossesAssociatedWithTroubleDebtRestructuring	1051000	USD
CY2018Q4	indb	Amount Of Specific Reserves Included In Allowance For Loan Losses Associated With Trouble Debt Restructuring AmountOfSpecificReservesIncludedInAllowanceForLoanLossesAssociatedWithTroubleDebtRestructuring	1079000	USD
CY2019Q1	indb	Additional Commitments To Lend To Borrower For Trouble Debt Restructuring AdditionalCommitmentsToLendToBorrowerForTroubleDebtRestructuring	865000	USD
CY2018Q4	indb	Additional Commitments To Lend To Borrower For Trouble Debt Restructuring AdditionalCommitmentsToLendToBorrowerForTroubleDebtRestructuring	982000	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	contract
CY2019Q1	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	225000	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	225000	USD
CY2018Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	contract
CY2018Q1	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	687000	USD
CY2018Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	687000	USD
CY2019Q1	indb	Financing Receivable Modifications Post Modification Recorded Investment Adjusted Interest Rate FinancingReceivableModificationsPostModificationRecordedInvestmentAdjustedInterestRate	150000	USD
CY2018Q1	indb	Financing Receivable Modifications Post Modification Recorded Investment Adjusted Interest Rate FinancingReceivableModificationsPostModificationRecordedInvestmentAdjustedInterestRate	0	USD
CY2019Q1	indb	Financing Receivable Modifications Post Modification Recorded Investment Court Ordered Concession FinancingReceivableModificationsPostModificationRecordedInvestmentCourtOrderedConcession	75000	USD
CY2018Q1	indb	Financing Receivable Modifications Post Modification Recorded Investment Court Ordered Concession FinancingReceivableModificationsPostModificationRecordedInvestmentCourtOrderedConcession	242000	USD
CY2019Q1	indb	Financing Receivable Modifications Post Modification Recorded Investment Extended Maturity FinancingReceivableModificationsPostModificationRecordedInvestmentExtendedMaturity	0	USD
CY2018Q1	indb	Financing Receivable Modifications Post Modification Recorded Investment Extended Maturity FinancingReceivableModificationsPostModificationRecordedInvestmentExtendedMaturity	445000	USD
CY2019Q1	indb	Financing Receivable Modifications Post Modification Recorded Investments FinancingReceivableModificationsPostModificationRecordedInvestments	225000	USD
CY2018Q1	indb	Financing Receivable Modifications Post Modification Recorded Investments FinancingReceivableModificationsPostModificationRecordedInvestments	687000	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1104000	USD
CY2019Q1	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	57482000	USD
CY2019Q1	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	68979000	USD
CY2019Q1	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1104000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1079000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	59060000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	68514000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1079000	USD
CY2019Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	60280000	USD
CY2019Q1	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	357000	USD
CY2018Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	72017000	USD
CY2018Q1	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	413000	USD
CY2019Q1	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance	9592000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance	9749000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield	1191000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield	1791000	USD
CY2019Q1	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	141000	USD
CY2018Q1	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	215000	USD
CY2019Q1	indb	Certainloansacquiredinatransfernotaccountedforasdebtsecuritiesaccretableyieldadjustmentchangesinexpectedcashflow Certainloansacquiredinatransfernotaccountedforasdebtsecuritiesaccretableyieldadjustmentchangesinexpectedcashflow	114000	USD
CY2018Q1	indb	Certainloansacquiredinatransfernotaccountedforasdebtsecuritiesaccretableyieldadjustmentchangesinexpectedcashflow Certainloansacquiredinatransfernotaccountedforasdebtsecuritiesaccretableyieldadjustmentchangesinexpectedcashflow	44000	USD
CY2019Q1	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	0	USD
CY2018Q1	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	22000	USD
CY2019Q1	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield	1164000	USD
CY2018Q1	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield	1642000	USD
CY2019Q1	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	125000000.0	USD
CY2019Q1	us-gaap	Repayments Of Debt RepaymentsOfDebt	50000000.0	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	35225000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	27555000	USD
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28106184	shares
CY2018Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	27486573	shares
CY2019Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	54466	shares
CY2018Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	67381	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28160650	shares
CY2018Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27553954	shares
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.25
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2019Q1	indb	Effect Of Dilutive Shares EffectOfDilutiveShares	0
CY2018Q1	indb	Effect Of Dilutive Shares EffectOfDilutiveShares	0
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.25
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2019Q1	us-gaap	Maximum Length Of Time Hedged In Interest Rate Cash Flow Hedge1 MaximumLengthOfTimeHedgedInInterestRateCashFlowHedge1	P4Y9M18D
CY2018Q1	indb	Amortization Of Deferred Hedge Gains Losses AmortizationOfDeferredHedgeGainsLosses	61000	USD
CY2019Q1	indb	Notionalamountoffairvaluehedgedderivative Notionalamountoffairvaluehedgedderivative	0	USD
CY2019Q1	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	1000	USD
CY2018Q1	indb	Change In Fair Value On Loans Held For Sale ChangeInFairValueOnLoansHeldForSale	-26000	USD
CY2019Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	705000	USD
CY2018Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	782000	USD
CY2019Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	490000	USD
CY2018Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	176000	USD
CY2019Q1	indb	Exposureto Institutional Counterparties ExposuretoInstitutionalCounterparties	17400000	USD
CY2018Q4	indb	Exposureto Institutional Counterparties ExposuretoInstitutionalCounterparties	18400000	USD
CY2019Q1	indb	Exposure To Counterparties Relating To Customer Related Positions ExposureToCounterpartiesRelatingToCustomerRelatedPositions	13800000	USD
CY2018Q4	indb	Exposure To Counterparties Relating To Customer Related Positions ExposureToCounterpartiesRelatingToCustomerRelatedPositions	6400000	USD
CY2019Q1	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	32936000	USD
CY2019Q1	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	0	USD
CY2019Q1	us-gaap	Derivative Assets DerivativeAssets	32936000	USD
CY2019Q1	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	13186000	USD
CY2019Q1	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	1190000	USD
CY2019Q1	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	18560000	USD
CY2019Q1	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	19762000	USD
CY2019Q1	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2019Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	19762000	USD
CY2019Q1	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	13186000	USD
CY2019Q1	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	505000	USD
CY2019Q1	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	6071000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	26113000	USD
CY2018Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	0	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	26113000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	6556000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	8528000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	11029000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	17523000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	17523000	USD
CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	6556000	USD
CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	173000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	10794000	USD
CY2019Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	49993000	USD
CY2019Q1	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	49061000	USD
CY2019Q1	us-gaap	Long Term Debt LongTermDebt	74914000	USD
CY2019Q1	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	71694000	USD
CY2019Q1	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	939000	USD
CY2018Q1	indb	Othernoninterestincome Asc606 OthernoninterestincomeASC606	974000	USD
CY2019Q1	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	16774000	USD
CY2018Q1	indb	Totalnoninterestincomeinscopeof Asc606 TotalnoninterestincomeinscopeofASC606	16037000	USD
CY2019Q1	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	4759000	USD
CY2018Q1	indb	Totalnoninterestincomeoutofscopeof Asc606 TotalnoninterestincomeoutofscopeofASC606	3826000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	21533000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	19863000	USD
CY2019Q1	indb	Investment Management Income Receivable InvestmentManagementIncomeReceivable	2089000	USD
CY2018Q4	indb	Investment Management Income Receivable InvestmentManagementIncomeReceivable	1893000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	6178000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1449000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	4729000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2019Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	6178000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	1449000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	4729000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	4996000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	1406000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	3590000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	424000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	119000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	305000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	4572000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	1287000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	3285000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-11000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-3000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-8000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	2000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	1000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	1000	USD
CY2019Q1	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	69000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	20000	USD
CY2019Q1	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	49000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-56000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-16000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-40000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	10806000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	2752000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8054000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-7240000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1772000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5468000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2018Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-7240000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-1772000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-5468000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	386000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	106000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	280000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	90000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	25000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	65000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	296000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	81000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	215000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	0	USD
CY2018Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	0	USD
CY2018Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-94000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-26000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-68000	USD
CY2018Q1	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	69000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	20000	USD
CY2018Q1	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	49000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-163000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-46000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-117000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-6781000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-1645000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5136000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1173000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8054000	USD
CY2019Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	6881000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1831000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5136000	USD
CY2018Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-8195000	USD
CY2019Q1	us-gaap	Property Subject To Or Available For Operating Lease Number Of Units PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits	73
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	33700000	USD
CY2019Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	2111000	USD
CY2019Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	39000	USD
CY2019Q1	us-gaap	Variable Lease Cost VariableLeaseCost	0	USD
CY2019Q1	us-gaap	Lease Cost LeaseCost	2150000	USD
CY2019Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y7M6D
CY2019Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0307
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	6301000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	7725000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6751000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5598000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3563000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	9246000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	39184000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4090000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	35094000	USD
CY2019Q1	us-gaap	Cash Reserve Deposit Required And Made CashReserveDepositRequiredAndMade	5300000	USD
CY2018Q4	us-gaap	Cash Reserve Deposit Required And Made CashReserveDepositRequiredAndMade	53500000	USD
CY2019Q1	indb	Original Investmentin Low Income Housing Projects OriginalInvestmentinLowIncomeHousingProjects	50232000	USD
CY2018Q4	indb	Original Investmentin Low Income Housing Projects OriginalInvestmentinLowIncomeHousingProjects	50232000	USD
CY2019Q1	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	32604000	USD
CY2018Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	33681000	USD
CY2019Q1	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	3643000	USD
CY2018Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	3935000	USD
CY2019Q1	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	5611000	USD
CY2018	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	5407000	USD
CY2019Q1	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	4405000	USD
CY2018	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	4377000	USD
CY2019Q1	us-gaap	Income Loss From Affordable Housing Projects Equity Method Investments IncomeLossFromAffordableHousingProjectsEquityMethodInvestments	1205000	USD
CY2018	us-gaap	Income Loss From Affordable Housing Projects Equity Method Investments IncomeLossFromAffordableHousingProjectsEquityMethodInvestments	1030000	USD
CY2019Q2	indb	Number Of Branches NumberOfBranches	11	branch
CY2019Q2	indb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Loans Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansNet	2100000000	USD
CY2019Q2	indb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Investments BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestments	196900000	USD
CY2019Q2	indb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposits BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits	1900000000	USD
CY2019Q2	indb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Borrowings BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBorrowings	124800000	USD
CY2019Q2	indb	Business Combination Costof Acquired Entity Purchase Price BusinessCombinationCostofAcquiredEntityPurchasePrice	667100000	USD
CY2019Q2	indb	Business Combination Increase In Acquirer Outstanding Shares BusinessCombinationIncreaseInAcquirerOutstandingShares	6166010	shares
CY2019Q2	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	167400000	USD

Files In Submission

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INDEPENDENT BANK CORP Stock $indb

2019 Q1 Form 10-Q Financial Statement

#000077690119000148 Filed on May 07, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INDB INDEPENDENT BANK CORP Stock $indb

2019 Q1 Form 10-Q Financial Statement

#000077690119000148 Filed on May 07, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INDB
INDEPENDENT BANK CORP Stock $indb