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v3.23.3

Loans - Narrative (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) loan | Sep. 30, 2023 USD ($) loan | Sep. 30, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Net deferred loan costs | $ 10,132,000 | $ 11,213,000 | $ 9,978,000
Loans used to collateralize borrowings from the Federal Home Loan Bank of Boston | 475,233,000 | 525,904,000 | 464,069,000
Loans | $ 1,914,674,000 | $ 2,079,860,000 | $ 1,857,975,000
Loans sold by bank | loan |  |  | 41
Ledger balances carried by loans |  |  | $ 5,200,000
Number of loans | loan | 29 |  |
TDR recorded investment | $ 4,744,000 |  |
Number of loans | loan | 1 |  |
TDR recorded investment more than 30 days past due | $ 97,000 |  |
Number of days past due | 30 days |  |
Number of loans placed on TDR status | loan | 1 |  |
Number of TDR loans involved in bankruptcy (loan) | loan | 4 |  |
Loans classified as TDRs that are involved in bankruptcy | $ 550,000 |  |
Number of loans classified as TDRs that were on non-accrual status | loan | 5 |  |
Loans classified as TDRs that were on non-accrual status | $ 339,000 |  |
Loans classified as TDRs that are involved in foreclosure | $ 0 |  |
Number of mortgage loans in the process of foreclosure | loan | 2 | 4 | 2
Mortgage loans in the process of foreclosure | $ 166,000 | $ 459,000 | $ 166,000
Interest rate swap agreements | Designated as Hedging Instrument |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loan adjustments | 689,000 | 2,489,000 | 633,000
Interest rate swap agreements | Fair Value Hedging | Designated as Hedging Instrument |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loan adjustments | 0 | 705,000 | 0
Asset Pledged as Collateral |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 338,636,000 | $ 332,657,000 | $ 327,551,000

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