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Loans Receivable and Allowance for Credit Losses - Credit Quality Indicators (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | $ 697 |  | $ 114,068
Year two | 114,197 |  | 199,200
Year three | 196,565 |  | 149,244
Year four | 146,871 |  | 23,262
Year five | 23,049 |  | 73,662
Prior | 212,585 |  | 161,255
Revolving | 116,359 |  | 128,168
Loans receivable, gross | 810,323 |  | 848,859
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 114
Year two | 135 |  | 9,195
Year three | 2,207 |  | 1,515
Year four | 181 |  | 0
Year five | 0 |  | 6,863
Prior | 589 |  | 730
Revolving | 0 |  | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 3,112 | $ 1,798 | 18,417
Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 697 |  | 113,849
Year two | 113,792 |  | 189,926
Year three | 186,259 |  | 145,918
Year four | 143,251 |  | 22,982
Year five | 15,944 |  | 62,770
Prior | 197,097 |  | 159,460
Revolving | 116,187 |  | 127,990
Loans receivable, gross | 773,227 |  | 822,895
Special mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 6
Year two | 6 |  | 6,830
Year three | 6,502 |  | 2,464
Year four | 172 |  | 0
Year five | 1,053 |  | 37
Prior | 1,862 |  | 11
Revolving | 0 |  | 104
Loans receivable, gross | 9,595 |  | 9,452
Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 213
Year two | 399 |  | 2,444
Year three | 3,804 |  | 862
Year four | 3,448 |  | 280
Year five | 6,052 |  | 10,855
Prior | 13,626 |  | 1,784
Revolving | 172 |  | 74
Loans receivable, gross | 27,501 |  | 16,512
Commercial Real Estate |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 104,683
Year two | 106,927 |  | 146,372
Year three | 149,155 |  | 111,308
Year four | 110,755 |  | 3,681
Year five | 3,656 |  | 41,832
Prior | 92,054 |  | 64,217
Revolving | 0 |  | 0
Loans receivable, gross | 462,547 |  | 472,093
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 0
Year three | 0 |  | 0
Year four | 0 |  | 0
Year five | 0 |  | 6,341
Prior | 158 |  | 5
Revolving | 0 |  | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 158 | 0 | 6,346
Commercial Real Estate | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 104,683
Year two | 106,927 |  | 138,091
Year three | 139,679 |  | 111,308
Year four | 110,591 |  | 3,401
Year five | 3,377 |  | 31,832
Prior | 80,477 |  | 63,526
Revolving | 0 |  | 0
Loans receivable, gross | 441,051 |  | 452,841
Commercial Real Estate | Special mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 6,482
Year three | 6,483 |  | 0
Year four | 130 |  | 0
Year five | 0 |  | 0
Prior | 0 |  | 0
Revolving | 0 |  | 0
Loans receivable, gross | 6,613 |  | 6,482
Commercial Real Estate | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 1,799
Year three | 2,993 |  | 0
Year four | 34 |  | 280
Year five | 279 |  | 10,000
Prior | 11,577 |  | 691
Revolving | 0 |  | 0
Loans receivable, gross | 14,883 |  | 12,770
Residential Real Estate |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 1,251
Year three | 1,243 |  | 2,975
Year four | 2,891 |  | 11,577
Year five | 11,488 |  | 15,770
Prior | 86,598 |  | 74,596
Revolving | 661 |  | 614
Loans receivable, gross | 102,881 |  | 106,783
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 0
Year three | 0 |  | 0
Year four | 0 |  | 0
Year five | 0 |  | 0
Prior | 21 |  | 515
Revolving | 0 |  | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 21 | 0 | 515
Residential Real Estate | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 1,251
Year three | 1,243 |  | 2,975
Year four | 2,891 |  | 11,577
Year five | 10,435 |  | 15,770
Prior | 85,816 |  | 74,596
Revolving | 661 |  | 614
Loans receivable, gross | 101,046 |  | 106,783
Residential Real Estate | Special mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  |
Year two | 0 |  |
Year three | 0 |  |
Year four | 0 |  |
Year five | 1,053 |  |
Prior | 782 |  |
Revolving | 0 |  |
Loans receivable, gross | 1,835 |  |
Commercial and Industrial |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 624 |  | 2,718
Year two | 1,920 |  | 14,264
Year three | 15,199 |  | 23,900
Year four | 23,102 |  | 8,004
Year five | 7,905 |  | 10,016
Prior | 14,219 |  | 8,128
Revolving | 85,451 |  | 96,535
Loans receivable, gross | 148,420 |  | 163,565
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 182
Year three | 0 |  | 85
Year four | 0 |  | 0
Year five | 0 |  | 516
Prior | 410 |  | 144
Revolving | 0 |  | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 410 | 2 | 927
Commercial and Industrial | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 624 |  | 2,696
Year two | 1,643 |  | 13,916
Year three | 14,831 |  | 23,099
Year four | 22,169 |  | 8,004
Year five | 2,132 |  | 9,578
Prior | 11,519 |  | 7,024
Revolving | 85,351 |  | 96,431
Loans receivable, gross | 138,269 |  | 160,748
Commercial and Industrial | Special mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 6
Year two | 6 |  | 348
Year three | 19 |  | 0
Year four | 42 |  | 0
Year five | 0 |  | 37
Prior | 1,080 |  | 11
Revolving | 0 |  | 104
Loans receivable, gross | 1,147 |  | 506
Commercial and Industrial | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 16
Year two | 271 |  | 0
Year three | 349 |  | 801
Year four | 891 |  | 0
Year five | 5,773 |  | 401
Prior | 1,620 |  | 1,093
Revolving | 100 |  | 0
Loans receivable, gross | 9,004 |  | 2,311
Consumer and Other |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 73 |  | 6,667
Year two | 5,350 |  | 37,313
Year three | 30,968 |  | 4,785
Year four | 3,849 |  | 0
Year five | 0 |  | 5,590
Prior | 19,285 |  | 14,314
Revolving | 30,247 |  | 31,019
Loans receivable, gross | 89,772 |  | 99,688
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 114
Year two | 135 |  | 9,013
Year three | 2,207 |  | 1,280
Year four | 181 |  | 0
Year five | 0 |  | 6
Prior | 0 |  | 66
Revolving | 0 |  | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 2,523 | 1,796 | 10,479
Consumer and Other | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 73 |  | 6,470
Year two | 5,222 |  | 36,668
Year three | 30,506 |  | 4,724
Year four | 3,790 |  | 0
Year five | 0 |  | 5,590
Prior | 19,285 |  | 14,314
Revolving | 30,175 |  | 30,945
Loans receivable, gross | 89,051 |  | 98,711
Consumer and Other | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 197
Year two | 128 |  | 645
Year three | 462 |  | 61
Year four | 59 |  | 0
Year five | 0 |  | 0
Prior | 0 |  | 0
Revolving | 72 |  | 74
Loans receivable, gross | 721 |  | 977
Construction |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 0
Year three | 0 |  | 3,812
Year four | 3,810 |  | 0
Year five | 0 |  | 454
Prior | 429 |  | 0
Revolving | 0 |  | 0
Loans receivable, gross | 4,239 |  | 4,266
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Year one |  |  | 0
Year two |  |  | 0
Year three |  |  | 150
Year four |  |  | 0
Year five |  |  | 0
Prior |  |  | 0
Revolving |  |  | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 0 | 0 | 150
Construction | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 0
Year three | 0 |  | 3,812
Year four | 3,810 |  | 0
Year five | 0 |  | 0
Prior | 0 |  | 0
Revolving | 0 |  | 0
Loans receivable, gross | 3,810 |  | 3,812
Construction | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 0
Year three | 0 |  | 0
Year four | 0 |  | 0
Year five | 0 |  | 454
Prior | 429 |  | 0
Revolving | 0 |  | 0
Loans receivable, gross | 429 |  | 454
Construction to Permanent - CRE |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 0
Year three | 0 |  | 2,464
Year four | 2,464 |  | 0
Year five | 0 |  | 0
Prior | 0 |  | 0
Revolving | 0 |  | 0
Loans receivable, gross | 2,464 |  | 2,464
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 0 | $ 0 |
Construction to Permanent - CRE | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Year one | 0 |  | 0
Year two | 0 |  | 0
Year three | 0 |  | 2,464
Year four | 2,464 |  | 0
Year five | 0 |  | 0
Prior | 0 |  | 0
Revolving | 0 |  | 0
Loans receivable, gross | $ 2,464 |  | $ 2,464

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