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Loans and Allowance for Credit Losses on Loans - Schedule of Loans by Risk Grade and Origination Year (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | $ 202,081 |  | $ 202,081 |  | $ 241,182
Financing receivable, originated, year two | 186,492 |  | 186,492 |  | 132,158
Financing receivable, originated, year three | 112,719 |  | 112,719 |  | 263,469
Financing receivable, originated, year four | 239,723 |  | 239,723 |  | 286,656
Financing receivable, originated, year five | 273,171 |  | 273,171 |  | 251,574
Prior | 889,945 |  | 889,945 |  | 731,202
Revolving Loans Amortized Cost | 186,223 |  | 186,223 |  | 177,015
Total | 2,090,354 |  | 2,090,354 |  | 2,083,256
Gross current period charge-offs, originated, year one |  |  | 0 |  |
Gross current period charge-offs, originated, year two |  |  | 0 |  |
Gross current period charge-offs, originated, year three |  |  | 0 |  |
Gross current period charge-offs, originated, year four |  |  | 0 |  |
Gross current period charge-offs, originated, year five |  |  | (809) |  |
Gross current period charge-offs, originated, prior |  |  | (15) |  |
Gross current period charge-offs, originated, revolving loans amortized cost |  |  | (54) |  |
Gross current period charge-offs, originated, total | (1) | $ 0 | (878) | $ (51) |
Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 197,037 |  | 197,037 |  | 214,779
Financing receivable, originated, year two | 170,765 |  | 170,765 |  | 131,283
Financing receivable, originated, year three | 112,006 |  | 112,006 |  | 255,830
Financing receivable, originated, year four | 233,754 |  | 233,754 |  | 263,355
Financing receivable, originated, year five | 254,835 |  | 254,835 |  | 250,036
Prior | 804,728 |  | 804,728 |  | 645,628
Revolving Loans Amortized Cost | 179,330 |  | 179,330 |  | 168,325
Total | 1,952,455 |  | 1,952,455 |  | 1,929,236
Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 3,529 |  | 3,529 |  | 26,403
Financing receivable, originated, year two | 15,249 |  | 15,249 |  | 378
Financing receivable, originated, year three | 369 |  | 369 |  | 2,736
Financing receivable, originated, year four | 0 |  | 0 |  | 20,967
Financing receivable, originated, year five | 18,336 |  | 18,336 |  | 1,538
Prior | 51,036 |  | 51,036 |  | 49,608
Revolving Loans Amortized Cost | 0 |  | 0 |  | 7,286
Total | 88,519 |  | 88,519 |  | 108,916
Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 1,515 |  | 1,515 |  | 0
Financing receivable, originated, year two | 478 |  | 478 |  | 497
Financing receivable, originated, year three | 344 |  | 344 |  | 4,903
Financing receivable, originated, year four | 5,969 |  | 5,969 |  | 2,334
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 34,181 |  | 34,181 |  | 35,966
Revolving Loans Amortized Cost | 6,893 |  | 6,893 |  | 1,404
Total | 49,380 |  | 49,380 |  | 45,104
Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 17,685 |  | 17,685 |  | 10,549
Financing receivable, originated, year two | 8,252 |  | 8,252 |  | 20,282
Financing receivable, originated, year three | 16,188 |  | 16,188 |  | 10,535
Financing receivable, originated, year four | 9,379 |  | 9,379 |  | 1,371
Financing receivable, originated, year five | 843 |  | 843 |  | 2,655
Prior | 23,761 |  | 23,761 |  | 27,708
Revolving Loans Amortized Cost | 78,195 |  | 78,195 |  | 79,163
Total | 154,303 |  | 154,303 |  | 152,263
Gross current period charge-offs, originated, year one |  |  | 0 |  |
Gross current period charge-offs, originated, year two |  |  | 0 |  |
Gross current period charge-offs, originated, year three |  |  | 0 |  |
Gross current period charge-offs, originated, year four |  |  | 0 |  |
Gross current period charge-offs, originated, year five |  |  | 0 |  |
Gross current period charge-offs, originated, prior |  |  | 0 |  |
Gross current period charge-offs, originated, revolving loans amortized cost |  |  | (53) |  |
Gross current period charge-offs, originated, total | (1) | 0 | (53) | (33) |
Commercial Portfolio Segment | Commercial and industrial | Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 17,685 |  | 17,685 |  | 9,951
Financing receivable, originated, year two | 7,774 |  | 7,774 |  | 20,282
Financing receivable, originated, year three | 16,188 |  | 16,188 |  | 7,742
Financing receivable, originated, year four | 6,586 |  | 6,586 |  | 1,371
Financing receivable, originated, year five | 843 |  | 843 |  | 2,650
Prior | 23,629 |  | 23,629 |  | 27,487
Revolving Loans Amortized Cost | 71,751 |  | 71,751 |  | 71,212
Total | 144,456 |  | 144,456 |  | 140,695
Commercial Portfolio Segment | Commercial and industrial | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 0 |  | 0 |  | 598
Financing receivable, originated, year two | 0 |  | 0 |  | 0
Financing receivable, originated, year three | 0 |  | 0 |  | 0
Financing receivable, originated, year four | 0 |  | 0 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 5
Prior | 132 |  | 132 |  | 221
Revolving Loans Amortized Cost | 0 |  | 0 |  | 7,286
Total | 132 |  | 132 |  | 8,110
Commercial Portfolio Segment | Commercial and industrial | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 0 |  | 0 |  | 0
Financing receivable, originated, year two | 478 |  | 478 |  | 0
Financing receivable, originated, year three | 0 |  | 0 |  | 2,793
Financing receivable, originated, year four | 2,793 |  | 2,793 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost | 6,444 |  | 6,444 |  | 665
Total | 9,715 |  | 9,715 |  | 3,458
Commercial real estate loans | Commercial owner-occupied |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 28,578 |  | 28,578 |  | 14,638
Financing receivable, originated, year two | 12,206 |  | 12,206 |  | 13,764
Financing receivable, originated, year three | 12,943 |  | 12,943 |  | 45,491
Financing receivable, originated, year four | 43,320 |  | 43,320 |  | 63,406
Financing receivable, originated, year five | 61,766 |  | 61,766 |  | 41,964
Prior | 154,911 |  | 154,911 |  | 142,530
Revolving Loans Amortized Cost | 272 |  | 272 |  | 169
Total | 313,996 |  | 313,996 |  | 321,962
Gross current period charge-offs, originated, total | 0 | 0 | 0 | 0 |
Commercial real estate loans | Commercial owner-occupied | Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 27,063 |  | 27,063 |  | 14,638
Financing receivable, originated, year two | 12,206 |  | 12,206 |  | 13,386
Financing receivable, originated, year three | 12,480 |  | 12,480 |  | 43,381
Financing receivable, originated, year four | 40,144 |  | 40,144 |  | 44,536
Financing receivable, originated, year five | 43,430 |  | 43,430 |  | 41,160
Prior | 148,185 |  | 148,185 |  | 130,197
Revolving Loans Amortized Cost | 272 |  | 272 |  | 169
Total | 283,780 |  | 283,780 |  | 287,467
Commercial real estate loans | Commercial owner-occupied | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 0 |  | 0 |  | 0
Financing receivable, originated, year two | 0 |  | 0 |  | 378
Financing receivable, originated, year three | 369 |  | 369 |  | 0
Financing receivable, originated, year four | 0 |  | 0 |  | 18,870
Financing receivable, originated, year five | 18,336 |  | 18,336 |  | 804
Prior | 5,332 |  | 5,332 |  | 9,499
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 24,037 |  | 24,037 |  | 29,551
Commercial real estate loans | Commercial owner-occupied | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 1,515 |  | 1,515 |  | 0
Financing receivable, originated, year two | 0 |  | 0 |  | 0
Financing receivable, originated, year three | 94 |  | 94 |  | 2,110
Financing receivable, originated, year four | 3,176 |  | 3,176 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 1,394 |  | 1,394 |  | 2,834
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 6,179 |  | 6,179 |  | 4,944
Commercial real estate loans | Commercial non-owner occupied |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 138,785 |  | 138,785 |  | 137,396
Financing receivable, originated, year two | 117,774 |  | 117,774 |  | 65,403
Financing receivable, originated, year three | 55,282 |  | 55,282 |  | 165,540
Financing receivable, originated, year four | 160,497 |  | 160,497 |  | 200,885
Financing receivable, originated, year five | 192,643 |  | 192,643 |  | 179,789
Prior | 647,909 |  | 647,909 |  | 515,405
Revolving Loans Amortized Cost | 11,373 |  | 11,373 |  | 9,178
Total | 1,324,263 |  | 1,324,263 |  | 1,273,596
Gross current period charge-offs, originated, year one |  |  | 0 |  |
Gross current period charge-offs, originated, year two |  |  | 0 |  |
Gross current period charge-offs, originated, year three |  |  | 0 |  |
Gross current period charge-offs, originated, year four |  |  | 0 |  |
Gross current period charge-offs, originated, year five |  |  | (809) |  |
Gross current period charge-offs, originated, prior |  |  | 0 |  |
Gross current period charge-offs, originated, revolving loans amortized cost |  |  | 0 |  |
Gross current period charge-offs, originated, total | 0 | 0 | (809) | 0 |
Commercial real estate loans | Commercial non-owner occupied | Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 135,256 |  | 135,256 |  | 119,053
Financing receivable, originated, year two | 102,525 |  | 102,525 |  | 64,906
Financing receivable, originated, year three | 55,282 |  | 55,282 |  | 162,804
Financing receivable, originated, year four | 160,497 |  | 160,497 |  | 196,661
Financing receivable, originated, year five | 192,643 |  | 192,643 |  | 179,060
Prior | 569,725 |  | 569,725 |  | 442,574
Revolving Loans Amortized Cost | 11,373 |  | 11,373 |  | 9,178
Total | 1,227,301 |  | 1,227,301 |  | 1,174,236
Commercial real estate loans | Commercial non-owner occupied | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 3,529 |  | 3,529 |  | 18,343
Financing receivable, originated, year two | 15,249 |  | 15,249 |  | 0
Financing receivable, originated, year three | 0 |  | 0 |  | 2,736
Financing receivable, originated, year four | 0 |  | 0 |  | 2,097
Financing receivable, originated, year five | 0 |  | 0 |  | 729
Prior | 45,572 |  | 45,572 |  | 39,888
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 64,350 |  | 64,350 |  | 63,793
Commercial real estate loans | Commercial non-owner occupied | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 0 |  | 0 |  | 0
Financing receivable, originated, year two | 0 |  | 0 |  | 497
Financing receivable, originated, year three | 0 |  | 0 |  | 0
Financing receivable, originated, year four | 0 |  | 0 |  | 2,127
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 32,612 |  | 32,612 |  | 32,943
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 32,612 |  | 32,612 |  | 35,567
Commercial real estate loans | Construction |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 4,896 |  | 4,896 |  | 25,590
Financing receivable, originated, year two | 10,973 |  | 10,973 |  | 0
Financing receivable, originated, year three | 0 |  | 0 |  | 11,380
Financing receivable, originated, year four | 0 |  | 0 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 15,869 |  | 15,869 |  | 36,970
Gross current period charge-offs, originated, total | 0 | 0 | 0 | 0 |
Commercial real estate loans | Construction | Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 4,896 |  | 4,896 |  | 18,128
Financing receivable, originated, year two | 10,973 |  | 10,973 |  | 0
Financing receivable, originated, year three | 0 |  | 0 |  | 11,380
Financing receivable, originated, year four | 0 |  | 0 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 15,869 |  | 15,869 |  | 29,508
Commercial real estate loans | Construction | Special Mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one |  |  |  |  | 7,462
Financing receivable, originated, year two |  |  |  |  | 0
Financing receivable, originated, year three |  |  |  |  | 0
Financing receivable, originated, year four |  |  |  |  | 0
Financing receivable, originated, year five |  |  |  |  | 0
Prior |  |  |  |  | 0
Revolving Loans Amortized Cost |  |  |  |  | 0
Total |  |  |  |  | 7,462
Residential Portfolio Segment | Home equity |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 99 |  | 99 |  | 94
Financing receivable, originated, year two | 76 |  | 76 |  | 13
Financing receivable, originated, year three | 13 |  | 13 |  | 0
Financing receivable, originated, year four | 0 |  | 0 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 907 |  | 907 |  | 1,142
Revolving Loans Amortized Cost | 94,777 |  | 94,777 |  | 87,076
Total | 95,872 |  | 95,872 |  | 88,325
Gross current period charge-offs, originated, total | 0 | 0 | 0 | 0 |
Residential Portfolio Segment | Home equity | Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 99 |  | 99 |  | 94
Financing receivable, originated, year two | 76 |  | 76 |  | 13
Financing receivable, originated, year three | 13 |  | 13 |  | 0
Financing receivable, originated, year four | 0 |  | 0 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 742 |  | 742 |  | 968
Revolving Loans Amortized Cost | 94,328 |  | 94,328 |  | 86,337
Total | 95,258 |  | 95,258 |  | 87,412
Residential Portfolio Segment | Home equity | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 0 |  | 0 |  | 0
Financing receivable, originated, year two | 0 |  | 0 |  | 0
Financing receivable, originated, year three | 0 |  | 0 |  | 0
Financing receivable, originated, year four | 0 |  | 0 |  | 0
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 165 |  | 165 |  | 174
Revolving Loans Amortized Cost | 449 |  | 449 |  | 739
Total | 614 |  | 614 |  | 913
Residential Portfolio Segment | Other residential |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 2,381 |  | 2,381 |  | 35,390
Financing receivable, originated, year two | 22,641 |  | 22,641 |  | 17,267
Financing receivable, originated, year three | 16,737 |  | 16,737 |  | 19,682
Financing receivable, originated, year four | 17,850 |  | 17,850 |  | 12,989
Financing receivable, originated, year five | 10,780 |  | 10,780 |  | 24,378
Prior | 52,535 |  | 52,535 |  | 33,501
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 122,924 |  | 122,924 |  | 143,207
Gross current period charge-offs, originated, total | 0 | 0 | 0 | 0 |
Residential Portfolio Segment | Other residential | Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 2,381 |  | 2,381 |  | 35,390
Financing receivable, originated, year two | 22,641 |  | 22,641 |  | 17,267
Financing receivable, originated, year three | 16,663 |  | 16,663 |  | 19,682
Financing receivable, originated, year four | 17,850 |  | 17,850 |  | 12,989
Financing receivable, originated, year five | 10,780 |  | 10,780 |  | 24,378
Prior | 52,535 |  | 52,535 |  | 33,501
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | 122,850 |  | 122,850 |  | 143,207
Residential Portfolio Segment | Other residential | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 0 |  | 0 |  |
Financing receivable, originated, year two | 0 |  | 0 |  |
Financing receivable, originated, year three | 74 |  | 74 |  |
Financing receivable, originated, year four | 0 |  | 0 |  |
Financing receivable, originated, year five | 0 |  | 0 |  |
Prior | 0 |  | 0 |  |
Revolving Loans Amortized Cost | 0 |  | 0 |  |
Total | 74 |  | 74 |  |
Installment and other consumer loans | Installment and other consumer loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 9,657 |  | 9,657 |  | 17,525
Financing receivable, originated, year two | 14,570 |  | 14,570 |  | 15,429
Financing receivable, originated, year three | 11,556 |  | 11,556 |  | 10,841
Financing receivable, originated, year four | 8,677 |  | 8,677 |  | 8,005
Financing receivable, originated, year five | 7,139 |  | 7,139 |  | 2,788
Prior | 9,922 |  | 9,922 |  | 10,916
Revolving Loans Amortized Cost | 1,606 |  | 1,606 |  | 1,429
Total | 63,127 |  | 63,127 |  | 66,933
Gross current period charge-offs, originated, year one |  |  | 0 |  | 0
Gross current period charge-offs, originated, year two |  |  | 0 |  | (14)
Gross current period charge-offs, originated, year three |  |  | 0 |  | 0
Gross current period charge-offs, originated, year four |  |  | 0 |  | (39)
Gross current period charge-offs, originated, year five |  |  | 0 |  | 0
Gross current period charge-offs, originated, prior |  |  | (15) |  | (1)
Gross current period charge-offs, originated, revolving loans amortized cost |  |  | (1) |  | (4)
Gross current period charge-offs, originated, total | 0 | $ 0 | (16) | $ (18) | (58)
Installment and other consumer loans | Installment and other consumer loans | Pass and Watch |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 9,657 |  | 9,657 |  | 17,525
Financing receivable, originated, year two | 14,570 |  | 14,570 |  | 15,429
Financing receivable, originated, year three | 11,380 |  | 11,380 |  | 10,841
Financing receivable, originated, year four | 8,677 |  | 8,677 |  | 7,798
Financing receivable, originated, year five | 7,139 |  | 7,139 |  | 2,788
Prior | 9,912 |  | 9,912 |  | 10,901
Revolving Loans Amortized Cost | 1,606 |  | 1,606 |  | 1,429
Total | 62,941 |  | 62,941 |  | 66,711
Installment and other consumer loans | Installment and other consumer loans | Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Financing receivable, originated, year one | 0 |  | 0 |  | 0
Financing receivable, originated, year two | 0 |  | 0 |  | 0
Financing receivable, originated, year three | 176 |  | 176 |  | 0
Financing receivable, originated, year four | 0 |  | 0 |  | 207
Financing receivable, originated, year five | 0 |  | 0 |  | 0
Prior | 10 |  | 10 |  | 15
Revolving Loans Amortized Cost | 0 |  | 0 |  | 0
Total | $ 186 |  | $ 186 |  | $ 222

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