XML 83 R60.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Summary of Nonaccrual Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable Impaired [Line Items] |  |  |  |  |
Financing Receivable, Nonaccrual |  | $ 101,529 | $ 54,383 | [1] |
Financing Receivable, Nonaccrual, No Allowance | [1] | 18,869 | 11,343 |  |
Finance Receivable, Nonaccrual, with allowance |  | 82,660 | 43,040 |  |
Accounts Receivable, Noncurrent, Accrued Interest, Writeoff |  | 676 | 1,000 |  | $ 1,400
Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) |  | 8,100 | 8,600 |  |
Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Financing Receivable, Nonaccrual |  | 14,152 | 26,805 | [1] |
Financing Receivable, Nonaccrual, No Allowance | [1] | 11,652 | 298 |  |
Finance Receivable, Nonaccrual, with allowance |  | 2,500 | 26,507 |  |
Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Financing Receivable, Nonaccrual |  | 74,343 | 16,335 | [1] |
Financing Receivable, Nonaccrual, No Allowance | [1] | 7,217 | 11,041 |  |
Finance Receivable, Nonaccrual, with allowance |  | 67,126 | 5,294 |  |
Small Business [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Financing Receivable, Nonaccrual |  | 302 | 398 | [1] |
Financing Receivable, Nonaccrual, No Allowance | [1] |  | 4 |  |
Finance Receivable, Nonaccrual, with allowance |  | 302 | 394 |  |
Residential Real Estate [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Financing Receivable, Nonaccrual |  | 10,243 | 7,634 | [1] |
Financing Receivable, Nonaccrual, No Allowance | [1] | 0 |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 10,243 | 7,634 |  |
Home Equity [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Financing Receivable, Nonaccrual |  | 2,479 | 3,171 | [1] |
Financing Receivable, Nonaccrual, No Allowance | [1] | 0 | 0 |  |
Finance Receivable, Nonaccrual, with allowance |  | 2,479 | 3,171 |  |
Consumer Portfolio Segment [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Financing Receivable, Nonaccrual |  | 10 | 40 | [1] |
Financing Receivable, Nonaccrual, No Allowance | [1] | 0 | 0 |  |
Finance Receivable, Nonaccrual, with allowance |  | $ 10 | $ 40 |  |
[1] | (1)Nonaccrual balances reported above without an allowance for credit losses are attributable to loans evaluated on an individual basis where it was determined that there was no risk of loss due to sufficient underlying collateral values.

X
- Definition Finance Receivable, Nonaccrual, with allowance + References No definition available. + Details
Name: | indb_FinanceReceivableNonaccrualwithallowance
Namespace Prefix: | indb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of writeoff of accrued interest on accounts receivable classified as noncurrent recognized by reversing interest income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3D -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3D + Details
Name: | us-gaap_AccountsReceivableNoncurrentAccruedInterestWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableNonaccrualNoAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (3) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (2) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481598/310-20-45-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-4 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -SubTopic 20 -Topic 310 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481569/310-20-50-3 + Details
Name: | us-gaap_FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount
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=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: |