XML 67 R49.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Loans, Allowance for Loan Losses and Credit Quality (TDRs that have subsequently defaulted) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 USD ($) contract | Jun. 30, 2015 USD ($) contract | Jun. 30, 2016 USD ($) contract | Jun. 30, 2015 USD ($) contract
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract | 0 | 0 | 0 | 5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ | $ 0 | $ 0 | $ 0 | $ 1,219
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract | 0 | 0 | 0 | 2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ | $ 0 | $ 0 | $ 0 | $ 880
Commercial and Industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract | 0 | 0 | 0 | 3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ | $ 0 | $ 0 | $ 0 | $ 339
Residential Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract | 0 | 0 |  |
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ | $ 0 | $ 0 |  |

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_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=indb_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |