v3.26.1
Allowance for Credit Losses - Credit Quality Risk Ratings by Segment (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total $ 2,405,149 $ 2,383,150 $ 2,394,109
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Total (832) (208) (1,743)
Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 63,022 96,436 347,992
Year Two 343,738 318,949 288,222
Year Three 277,496 310,240 280,130
Year Four 266,710 420,681 379,101
Year Five 370,104 351,494 311,268
Prior 818,159 632,902 540,746
Revolving Loans Amortized Cost Basis 249,753 239,241 214,833
Revolving Loans Converted to Term 16,167 13,207 31,817
Total 2,405,149 2,383,150 2,394,109
Commercial | Real estate owner occupied      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 382,594 370,465 378,263
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 (53)
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 (53)
Commercial | Real estate owner occupied | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 12,730 25,863 55,107
Year Two 56,025 47,993 44,789
Year Three 42,979 66,977 66,895
Year Four 65,347 74,657 71,675
Year Five 68,569 34,350 33,394
Prior 123,130 108,092 96,497
Revolving Loans Amortized Cost Basis 13,814 11,573 9,906
Revolving Loans Converted to Term 0 960 0
Total 382,594 370,465 378,263
Commercial | Real estate owner occupied | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 12,730 25,528 54,972
Year Two 55,890 47,943 43,055
Year Three 41,565 63,697 65,526
Year Four 63,993 69,323 64,412
Year Five 59,761 34,093 33,137
Prior 119,731 105,636 94,034
Revolving Loans Amortized Cost Basis 13,814 11,439 9,906
Revolving Loans Converted to Term 0 960 0
Total 367,484 358,619 365,042
Commercial | Real estate owner occupied | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 335 135
Year Two 135 0 0
Year Three 1,340 3,026 0
Year Four 0 5,334 0
Year Five 1,538 0 0
Prior 1,644 1,602 930
Revolving Loans Amortized Cost Basis 0 134 0
Revolving Loans Converted to Term 0 0 0
Total 4,657 10,431 1,065
Commercial | Real estate owner occupied | Substandard (risk rating 7)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 50 1,734
Year Three 74 254 1,369
Year Four 1,354 0 7,263
Year Five 7,270 257 257
Prior 1,755 854 1,533
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 10,453 1,415 12,156
Commercial | Real estate owner occupied | Doubtful (risk rating 8)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Commercial | Real estate non-owner occupied      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 404,359 413,530 409,177
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Commercial | Real estate non-owner occupied | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 6,827 14,100 58,208
Year Two 59,966 30,889 31,516
Year Three 28,854 29,449 38,218
Year Four 35,094 70,836 66,551
Year Five 66,226 113,761 97,606
Prior 196,789 139,665 105,365
Revolving Loans Amortized Cost Basis 10,603 13,310 11,713
Revolving Loans Converted to Term 0 1,520 0
Total 404,359 413,530 409,177
Commercial | Real estate non-owner occupied | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 6,827 12,815 56,787
Year Two 58,603 30,688 31,264
Year Three 28,602 29,387 38,156
Year Four 35,033 70,836 65,396
Year Five 63,185 113,717 97,598
Prior 194,630 139,405 103,651
Revolving Loans Amortized Cost Basis 10,603 13,310 11,713
Revolving Loans Converted to Term 0 1,520 0
Total 397,483 411,678 404,565
Commercial | Real estate non-owner occupied | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 62 0
Year Four 0 0 1,155
Year Five 3,041 44 8
Prior 2,099 199 1,653
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 5,140 305 2,816
Commercial | Real estate non-owner occupied | Substandard (risk rating 7)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 1,285 1,421
Year Two 1,363 201 252
Year Three 252 0 62
Year Four 61 0 0
Year Five 0 0 0
Prior 60 61 61
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 1,736 1,547 1,796
Commercial | Real estate non-owner occupied | Doubtful (risk rating 8)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Commercial | Construction      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 30,237 76,402 35,025
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Commercial | Construction | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 2,360 4,992 12,616
Year Two 7,412 33,320 9,836
Year Three 9,853 19,150 4,129
Year Four 2,360 10,413 2,139
Year Five 2,067 5,019 3,574
Prior 6,185 3,508 2,731
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 30,237 76,402 35,025
Commercial | Construction | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 2,360 4,992 12,616
Year Two 7,412 33,225 9,741
Year Three 9,758 19,150 4,129
Year Four 2,360 8,412 2,139
Year Five 2,067 4,951 3,509
Prior 6,121 3,508 2,731
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 30,078 74,238 34,865
Commercial | Construction | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 2,001 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 2,001 0
Commercial | Construction | Substandard (risk rating 7)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 95 95
Year Three 95 0 0
Year Four 0 0 0
Year Five 0 68 65
Prior 64 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 159 163 160
Commercial | Construction | Doubtful (risk rating 8)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Commercial | C&I      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 393,048 379,767 376,907
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 (46) (47)
Year Three 0 0 (635)
Year Four (287) 0 0
Year Five 0 0 (24)
Prior (386) (100) (627)
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total (673) (146) (1,333)
Commercial | C&I | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 16,951 17,521 50,086
Year Two 49,284 71,831 66,559
Year Three 65,317 50,277 45,438
Year Four 43,659 46,042 38,299
Year Five 36,739 39,382 33,623
Prior 60,940 36,801 31,123
Revolving Loans Amortized Cost Basis 113,674 116,729 89,239
Revolving Loans Converted to Term 6,484 1,184 22,540
Total 393,048 379,767 376,907
Commercial | C&I | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 16,951 17,421 49,189
Year Two 47,138 71,806 66,218
Year Three 56,452 49,011 44,355
Year Four 42,725 45,461 37,597
Year Five 31,505 38,872 33,302
Prior 60,677 36,195 30,562
Revolving Loans Amortized Cost Basis 103,795 115,708 88,210
Revolving Loans Converted to Term 6,484 1,184 22,540
Total 365,727 375,658 371,973
Commercial | C&I | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 30
Year Two 1,280 25 315
Year Three 8,762 10 172
Year Four 362 301 383
Year Five 4,916 471 289
Prior 126 73 65
Revolving Loans Amortized Cost Basis 9,387 840 562
Revolving Loans Converted to Term 0 0 0
Total 24,833 1,720 1,816
Commercial | C&I | Substandard (risk rating 7)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 100 867
Year Two 866 0 26
Year Three 103 1,256 911
Year Four 572 280 319
Year Five 318 39 32
Prior 137 275 496
Revolving Loans Amortized Cost Basis 492 181 467
Revolving Loans Converted to Term 0 0 0
Total 2,488 2,131 3,118
Commercial | C&I | Doubtful (risk rating 8)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 258 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 258 0
Commercial | Multifamily      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 150,425 131,036 158,910
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Commercial | Multifamily | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 4,388 4,293 45,368
Year Two 40,517 14,711 18,623
Year Three 18,561 13,513 9,966
Year Four 9,935 50,538 45,130
Year Five 44,467 20,333 19,066
Prior 31,793 26,879 19,989
Revolving Loans Amortized Cost Basis 764 769 768
Revolving Loans Converted to Term 0 0 0
Total 150,425 131,036 158,910
Commercial | Multifamily | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 4,388 4,181 45,208
Year Two 40,357 14,711 16,212
Year Three 16,153 11,913 8,366
Year Four 8,335 49,518 44,110
Year Five 43,450 19,005 17,488
Prior 29,332 25,969 19,093
Revolving Loans Amortized Cost Basis 764 769 768
Revolving Loans Converted to Term 0 0 0
Total 142,779 126,066 151,245
Commercial | Multifamily | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 112 160
Year Two 0 0 0
Year Three 0 1,600 1,600
Year Four 0 0 0
Year Five 0 0 271
Prior 269 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 269 1,712 2,031
Commercial | Multifamily | Substandard (risk rating 7)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 160 0 2,411
Year Three 2,408 0 0
Year Four 1,600 1,020 1,020
Year Five 1,017 1,328 1,307
Prior 2,192 910 896
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 7,377 3,258 5,634
Commercial | Multifamily | Doubtful (risk rating 8)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Commercial | Agriculture      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 48,063 48,705 48,145
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three (90) 0 0
Year Four 0 0 0
Year Five 0 0 (27)
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total (90) 0 (27)
Commercial | Agriculture | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 1,319 4,123 9,993
Year Two 9,677 10,784 9,868
Year Three 9,666 3,247 2,659
Year Four 2,523 5,350 4,825
Year Five 4,566 3,858 3,381
Prior 17,967 19,344 15,282
Revolving Loans Amortized Cost Basis 2,179 1,768 1,960
Revolving Loans Converted to Term 166 231 177
Total 48,063 48,705 48,145
Commercial | Agriculture | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 1,319 2,798 8,670
Year Two 8,362 10,784 9,778
Year Three 9,666 2,712 2,405
Year Four 2,283 5,139 4,614
Year Five 4,355 3,777 3,381
Prior 17,863 19,080 15,176
Revolving Loans Amortized Cost Basis 2,179 1,168 1,960
Revolving Loans Converted to Term 166 231 177
Total 46,193 45,689 46,161
Commercial | Agriculture | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 460 0
Year Four 0 0 0
Year Five 0 52 0
Prior 0 135 0
Revolving Loans Amortized Cost Basis 0 600 0
Revolving Loans Converted to Term 0 0 0
Total 0 1,247 0
Commercial | Agriculture | Substandard (risk rating 7)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 1,325 1,323
Year Two 1,315 0 90
Year Three 0 75 254
Year Four 240 211 211
Year Five 211 29 0
Prior 104 129 106
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 1,870 1,769 1,984
Commercial | Agriculture | Doubtful (risk rating 8)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Municipal      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 52,168 55,104 52,074
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Municipal | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 620 1,937 6,274
Year Two 6,134 9,186 6,872
Year Three 6,586 18,563 16,482
Year Four 16,183 3,984 2,798
Year Five 2,769 3,881 4,287
Prior 19,876 17,553 15,361
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 52,168 55,104 52,074
Municipal | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 620 1,937 6,274
Year Two 6,134 9,186 6,872
Year Three 6,586 18,563 16,482
Year Four 16,183 3,984 2,798
Year Five 2,769 3,881 4,287
Prior 19,876 17,553 15,361
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 52,168 55,104 52,074
Municipal | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Municipal | Substandard (risk rating 7)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Municipal | Doubtful (risk rating 8)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Residential | Construction      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 39,119 35,427 35,332
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Residential | Construction | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 3,195 3,031 31,024
Year Two 33,585 27,475 3,785
Year Three 1,817 3,510 108
Year Four 108 728 415
Year Five 414 0 0
Prior 0 683 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 39,119 35,427 35,332
Residential | Construction | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 3,195 3,031 31,024
Year Two 33,585 27,475 3,785
Year Three 1,817 3,510 108
Year Four 108 728 415
Year Five 414 0 0
Prior 0 683 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 39,119 35,427 35,332
Residential | Construction | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Residential | Term      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 739,446 719,348 739,188
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 (1) (1)
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 (1) (1)
Residential | Term | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 12,801 15,831 67,695
Year Two 69,998 57,989 83,203
Year Three 81,367 94,350 86,975
Year Four 82,861 148,927 139,172
Year Five 136,856 128,412 114,391
Prior 352,578 271,202 246,383
Revolving Loans Amortized Cost Basis 2,868 2,517 1,251
Revolving Loans Converted to Term 117 120 118
Total 739,446 719,348 739,188
Residential | Term | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 12,801 15,831 67,304
Year Two 69,631 57,989 83,037
Year Three 80,402 94,350 86,924
Year Four 82,810 148,507 138,568
Year Five 136,140 127,709 113,437
Prior 349,474 269,381 244,356
Revolving Loans Amortized Cost Basis 2,868 2,517 1,251
Revolving Loans Converted to Term 117 120 118
Total 734,243 716,404 734,995
Residential | Term | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 391
Year Two 367 0 166
Year Three 965 0 51
Year Four 51 420 604
Year Five 716 703 954
Prior 3,104 1,821 2,027
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 5,203 2,944 4,193
Home Equity      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 147,102 131,522 142,219
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 0
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total 0 0 0
Home Equity | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 1,155 2,995 9,488
Year Two 9,283 12,157 11,410
Year Three 10,980 9,070 7,796
Year Four 7,369 8,127 7,476
Year Five 6,942 1,872 1,800
Prior 3,993 2,776 2,469
Revolving Loans Amortized Cost Basis 97,980 85,333 92,798
Revolving Loans Converted to Term 9,400 9,192 8,982
Total 147,102 131,522 142,219
Home Equity | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 1,155 2,995 9,488
Year Two 9,239 12,157 11,274
Year Three 10,846 9,070 7,782
Year Four 7,268 8,039 7,396
Year Five 6,864 1,872 1,558
Prior 3,691 2,683 2,266
Revolving Loans Amortized Cost Basis 97,748 85,270 92,710
Revolving Loans Converted to Term 9,231 9,021 8,800
Total 146,042 131,107 141,274
Home Equity | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 44 0 136
Year Three 134 0 14
Year Four 101 88 80
Year Five 78 0 242
Prior 302 93 203
Revolving Loans Amortized Cost Basis 232 63 88
Revolving Loans Converted to Term 169 171 182
Total 1,060 415 945
Consumer      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 18,588 21,844 18,869
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]      
Year One 0 0 (20)
Year Two (20) (16) (60)
Year Three (18) (11) (42)
Year Four (2) (8) (23)
Year Five (7) (2) (23)
Prior (22) (24) (161)
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total (69) (61) (329)
Consumer | Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 676 1,750 2,133
Year Two 1,857 2,614 1,761
Year Three 1,516 2,134 1,464
Year Four 1,271 1,079 621
Year Five 489 626 146
Prior 4,908 6,399 5,546
Revolving Loans Amortized Cost Basis 7,871 7,242 7,198
Revolving Loans Converted to Term 0 0 0
Total 18,588 21,844 18,869
Consumer | Pass (risk rating 1-5)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 676 1,750 2,133
Year Two 1,857 2,614 1,761
Year Three 1,516 2,134 1,464
Year Four 1,271 1,079 621
Year Five 489 626 146
Prior 4,908 6,399 5,541
Revolving Loans Amortized Cost Basis 7,871 7,242 7,198
Revolving Loans Converted to Term 0 0 0
Total 18,588 21,844 18,864
Consumer | Special Mention (risk rating 6)      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Year One 0 0 0
Year Two 0 0 0
Year Three 0 0 0
Year Four 0 0 0
Year Five 0 0 0
Prior 0 0 5
Revolving Loans Amortized Cost Basis 0 0 0
Revolving Loans Converted to Term 0 0 0
Total $ 0 $ 0 $ 5