XML 66 R47.htm IDEA: XBRL DOCUMENT
v3.19.1

Loans, Allowance for Loan Losses and Credit Quality (Summary of Nonaccrual Loans) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable Impaired [Line Items] |  |  |
Tdrs Recorded Investment On Nonaccrual Status |  | $ 28,908 | $ 29,348
Financing Receivable, Recorded Investment, Nonaccrual Status | [1] | 43,326 | 45,413
Commercial and Industrial [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | 25,879 | 26,310
Commercial Real Estate [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | 1,228 | 3,015
Construction Loans [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | 311 | 311
Small Business [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | 180 | 235
Residential Real Estate [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | 8,517 | 8,251
Consumer Home Equity [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | 7,202 | 7,278
Consumer - Other [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Financing Receivable, Recorded Investment, Nonaccrual Status |  | $ 9 | $ 13
[1] | (1)Included in these amounts were $28.9 million and $29.3 million of nonaccruing TDRs at March 31, 2019 and December 31, 2018, respectively.

X
- Definition Troubled Debt Restructurings recorded investment that are on nonaccrual status as of the balance sheet date. + References No definition available. + Details
Name: | indb_TdrsRecordedInvestmentOnNonaccrualStatus
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=indb_SmallBusinessMember
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: |

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

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