XML 47 R56.htm IDEA: XBRL DOCUMENT
v3.19.3

Loans, Allowance for Loan Losses and Credit Quality (Modifications which occurred during the period & change in recorded investment) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) contract | Sep. 30, 2018 USD ($) contract | Sep. 30, 2019 USD ($) contract | Sep. 30, 2018 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | contract | 5 | 8 | 9 | 16
TROUBLED DEBT RESTRUCTURINGS: |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | $ 448 | $ 908 | $ 784 | $ 1,974
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 453 | $ 928 | $ 789 | $ 1,994
Commercial and Industrial [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | contract | 1 | 2 | 2 | 2
TROUBLED DEBT RESTRUCTURINGS: |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | $ 87 | $ 126 | $ 184 | $ 126
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 87 | $ 126 | $ 184 | $ 126
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | contract | 1 | 1 | 2 | 2
TROUBLED DEBT RESTRUCTURINGS: |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | $ 133 | $ 205 | $ 283 | $ 650
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 133 | $ 205 | $ 283 | $ 650
Small Business [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | contract | 1 |  | 2 |
TROUBLED DEBT RESTRUCTURINGS: |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | $ 19 |  | $ 33 |
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 19 |  | $ 33 |
Residential Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | contract | 1 | 3 | 1 | 4
TROUBLED DEBT RESTRUCTURINGS: |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | $ 163 | $ 503 | $ 163 | $ 652
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 168 | $ 523 | $ 168 | $ 672
Consumer Home Equity [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | contract | 1 | 2 | 2 | 8
TROUBLED DEBT RESTRUCTURINGS: |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | $ 46 | $ 74 | $ 121 | $ 546
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 46 | $ 74 | $ 121 | $ 546

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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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=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: |