XML 244 R97.htm IDEA: XBRL DOCUMENT
v3.24.0.1

INCOME TAXES (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | $ 343,000 | $ 544,000 | $ 604,000

X
- Definition Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions, federal benefit of state tax amount + References No definition available. + Details
Name: | indb_UnrecognizedTaxBenefitsIncreaseResultingfromCurrentPeriodTaxPositionsfederalbenefitofstatetaxamount
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration