XML 57 R38.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Loans, Allowance for Loan Losses and Credit Quality (Allowance Allocations) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $ 0 | $ 0 |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 5,972,688 |  | $ 5,903,916
Ending Balance: Individually Evaluated for Impairment | 73,667 |  | 77,297
Financing Receivable, Net | 4,391,181 |  | 4,355,968
Ending Balance: Total Loans by Group | 6,064,366 |  | 5,999,605
Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | 18,011 |  | 18,392
Commercial and Industrial [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 842,891 |  | 862,875
Ending Balance: Individually Evaluated for Impairment | 38,438 |  | 39,178
Financing Receivable, Net | 881,329 |  | 902,053
Ending Balance: Total Loans by Group | 881,329 |  | 902,053
Commercial and Industrial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | 0 |  | 0
Commercial Real Estate [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 3,002,407 |  | 2,983,642
Ending Balance: Individually Evaluated for Impairment | 14,766 |  | 16,813
Financing Receivable, Net | 3,027,305 |  | 3,010,798
Ending Balance: Total Loans by Group | 3,027,305 |  | 3,010,798
Commercial Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | 10,132 |  | 10,343
Construction Loans [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 356,173 |  | 320,391
Ending Balance: Individually Evaluated for Impairment | 0 |  | 0
Financing Receivable, Net | 356,173 |  | 320,391
Ending Balance: Total Loans by Group | 356,173 |  | 320,391
Construction Loans [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | 0 |  | 0
Small Business [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 125,628 |  | 121,855
Ending Balance: Individually Evaluated for Impairment | 746 |  | 871
Financing Receivable, Net | 126,374 |  | 122,726
Ending Balance: Total Loans by Group | 126,374 |  | 122,726
Small Business [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | 0 |  | 0
Residential Real Estate [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 632,634 |  | 622,392
Ending Balance: Individually Evaluated for Impairment | 13,674 |  | 14,175
Ending Balance: Total Loans by Group | 653,999 |  | 644,426
Residential Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | 7,691 |  | 7,859
Consumer Home Equity [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 1,002,898 |  | 982,095
Ending Balance: Individually Evaluated for Impairment | 5,685 |  | 5,863
Ending Balance: Total Loans by Group | 1,008,771 |  | 988,147
Consumer Home Equity [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | 188 |  | 189
Consumer Other [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Ending Balance: Collectively Evaluated for Impairment | 10,057 |  | 10,666
Ending Balance: Individually Evaluated for Impairment | 358 |  | 397
Ending Balance: Total Loans by Group | 10,415 |  | 11,064
Consumer Other [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |
Allowance for loans based on collective and individual evaluation of impairment by loan category |  |  |
Financing Receivable, Net | $ 0 |  | $ 1

X
- Definition Allowance for loans based on collective and individual evaluation of impairment by loan category. + References No definition available. + Details
Name: | indb_AllowanceForLoansBasedOnCollectiveAndIndividualEvaluationOfImpairmentByLoanCategoryAbstract
Namespace Prefix: | indb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityMember
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_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: |