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Loans, net and allowance for credit losses - Allocation of Allowance for Loan Losses and Related Loans by Major Classification of Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Allowance for loan losses: |  |  |
Beginning Balance | $ 21,895 | $ 27,472 | $ 27,472
Charge-offs | (108) | (75) |
Recoveries | 102 | 66 |
Provisions (credits) | 708 | 1,244 |
Ending balance | 22,597 | 25,444 | 21,895
Ending balance: individually evaluated for impairment | 46 |  | 31
Ending balance: collectively evaluated for impairment | 22,551 |  | 21,864
Loans receivable: |  |  |
Loans | 108 |  | 3,025
Loans | 2,858,412 |  | 2,849,897
Ending balance: collectively evaluated for impairment | 2,850,967 |  | 2,845,157
Cumulative impact of adoption | ASC 326 |  |  |
Allowance for loan losses: |  |  |
Beginning Balance |  | (3,263) | (3,263)
Ending balance |  |  |
Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 7,347 |  | 4,730
Non-real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 98 |  | 10
Commercial |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 2,272 | 4,365 | 4,365
Charge-offs | (5) | (4) |
Recoveries | 55 |  |
Provisions (credits) | (35) | (197) |
Ending balance | 2,287 | 2,481 | 2,272
Ending balance: individually evaluated for impairment | 46 |  | 10
Ending balance: collectively evaluated for impairment | 2,241 |  | 2,262
Loans receivable: |  |  |
Loans | 5 |  | 58
Loans | 461,387 |  | 368,411
Ending balance: collectively evaluated for impairment | 460,842 |  | 368,394
Commercial | Cumulative impact of adoption | ASC 326 |  |  |
Allowance for loan losses: |  |  |
Beginning Balance |  | (1,683) | (1,683)
Ending balance |  |  |
Commercial | Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 447 |  | 7
Commercial | Non-real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 98 |  | 10
Municipal |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 788 | 1,247 | 1,247
Provisions (credits) | (90) | 324 |
Ending balance | 698 | 2,318 | 788
Ending balance: collectively evaluated for impairment | 698 |  | 788
Loans receivable: |  |  |
Loans | 173,370 |  | 175,304
Ending balance: collectively evaluated for impairment | 173,370 |  | 175,304
Municipal | Cumulative impact of adoption | ASC 326 |  |  |
Allowance for loan losses: |  |  |
Beginning Balance |  | 747 | 747
Ending balance |  |  |
Commercial real estate |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 14,153 | 17,915 | 17,915
Recoveries |  | 1 |
Provisions (credits) | 317 | 1,120 |
Ending balance | 14,470 | 15,692 | 14,153
Ending balance: individually evaluated for impairment |  |  | 21
Ending balance: collectively evaluated for impairment | 14,470 |  | 14,132
Loans receivable: |  |  |
Loans |  |  | 2,598
Loans | 1,783,851 |  | 1,863,118
Ending balance: collectively evaluated for impairment | 1,778,492 |  | 1,860,144
Commercial real estate | Cumulative impact of adoption | ASC 326 |  |  |
Allowance for loan losses: |  |  |
Beginning Balance |  | (3,344) | (3,344)
Ending balance |  |  |
Commercial real estate | Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 5,359 |  | 2,974
Residential real estate |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 3,782 | 3,072 | 3,072
Recoveries | 2 | 16 |
Provisions (credits) | 474 | (207) |
Ending balance | 4,258 | 3,868 | 3,782
Ending balance: collectively evaluated for impairment | 4,258 |  | 3,782
Loans receivable: |  |  |
Loans | 361,490 |  | 360,803
Ending balance: collectively evaluated for impairment | 359,949 |  | 359,054
Residential real estate | Cumulative impact of adoption | ASC 326 |  |  |
Allowance for loan losses: |  |  |
Beginning Balance |  | 987 | 987
Ending balance |  |  |
Residential real estate | Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 1,541 |  | 1,749
Consumer |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 900 | 873 | 873
Charge-offs | (103) | (71) |
Recoveries | 45 | 49 |
Provisions (credits) | 42 | 204 |
Ending balance | 884 | 1,085 | 900
Ending balance: collectively evaluated for impairment | 884 |  | 900
Loans receivable: |  |  |
Loans | 103 |  | 369
Loans | 78,314 |  | 82,261
Ending balance: collectively evaluated for impairment | $ 78,314 |  | 82,261
Consumer | Cumulative impact of adoption | ASC 326 |  |  |
Allowance for loan losses: |  |  |
Beginning Balance |  | $ 30 | $ 30
Ending balance |  |  |

X
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