XML 99 R40.htm IDEA: XBRL DOCUMENT
v3.19.3

Acquisition PCI Loans Acquired (Details) - Blue Hills Bancorp, Inc. [Member] $ in Thousands | Apr. 01, 2019 USD ($)
--- | ---
Business Acquisition [Line Items] |
Contractually required principal and interest at acquisition | $ 14,849
Contractual cash flows not expected to be collected | (5,717)
Expected cash flows at acquisition | 9,132
Interest component of expected cash flows | (1,464)
Basis in PCI loans at acquisition - estimated fair value | $ 7,668

X
- Definition Basis in PCI loans at acquisition - estimated fair value + References No definition available. + Details
Name: | indb_BasisinPCIloansatacquisitionestimatedfairvalue
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractual cash flows not expected to be collected + References No definition available. + Details
Name: | indb_Contractualcashflowsnotexpectedtobecollected
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractually required principal and interest at acquisition + References No definition available. + Details
Name: | indb_Contractuallyrequiredprincipalandinterestatacquisition
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Expected cash flows at acquisition + References No definition available. + Details
Name: | indb_Expectedcashflowsatacquisition
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Interest component of expected cash flows + References No definition available. + Details
Name: | indb_Interestcomponentofexpectedcashflows
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=indb_BlueHillsBancorpInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |