Loan Portfolio and Allowance for Credit Losses - Risk Category Loans by Class of Loans (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
| Commercial [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| Total loans |
$ 332,406
|
|
$ 332,406
|
|
$ 313,443
|
| Current-period Gross writeoffs |
0
|
$ 0
|
19
|
$ 4
|
|
| Commercial [Member] | Commercial Real Estate [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
42,267
|
|
42,267
|
|
47,620
|
| 2025/2024 |
47,755
|
|
47,755
|
|
48,708
|
| 2024/2023 |
41,121
|
|
41,121
|
|
49,673
|
| 2023/2022 |
44,383
|
|
44,383
|
|
67,129
|
| 2022/2021 |
63,548
|
|
63,548
|
|
21,050
|
| Prior |
68,449
|
|
68,449
|
|
56,233
|
| Revolving Loans Amortized Cost Basis |
4,874
|
|
4,874
|
|
4,694
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
312,397
|
|
312,397
|
|
295,107
|
| 2026/2025 |
|
|
0
|
|
0
|
| 2025/2024 |
|
|
0
|
|
0
|
| 2024/2023 |
|
|
0
|
|
0
|
| 2023/2022 |
|
|
0
|
|
0
|
| 2022/2021 |
|
|
19
|
|
4
|
| Prior |
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis Writeoffs |
|
|
0
|
|
0
|
| Revolving Loan Converted to Term Writeoffs |
|
|
0
|
|
0
|
| Current-period Gross writeoffs |
|
|
19
|
|
4
|
| Commercial [Member] | Commercial Real Estate [Member] | Pass [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
42,267
|
|
42,267
|
|
47,620
|
| 2025/2024 |
47,755
|
|
47,755
|
|
47,818
|
| 2024/2023 |
40,231
|
|
40,231
|
|
49,673
|
| 2023/2022 |
44,383
|
|
44,383
|
|
65,902
|
| 2022/2021 |
62,006
|
|
62,006
|
|
21,050
|
| Prior |
67,928
|
|
67,928
|
|
55,543
|
| Revolving Loans Amortized Cost Basis |
4,874
|
|
4,874
|
|
4,694
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
309,444
|
|
309,444
|
|
292,300
|
| Commercial [Member] | Commercial Real Estate [Member] | Special Mention [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
0
|
| 2024/2023 |
0
|
|
0
|
|
0
|
| 2023/2022 |
0
|
|
0
|
|
237
|
| 2022/2021 |
233
|
|
233
|
|
0
|
| Prior |
46
|
|
46
|
|
0
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
279
|
|
279
|
|
237
|
| Commercial [Member] | Commercial Real Estate [Member] | Substandard [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
890
|
| 2024/2023 |
890
|
|
890
|
|
0
|
| 2023/2022 |
0
|
|
0
|
|
990
|
| 2022/2021 |
1,309
|
|
1,309
|
|
0
|
| Prior |
475
|
|
475
|
|
690
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
2,674
|
|
2,674
|
|
2,570
|
| Commercial [Member] | Commercial Real Estate [Member] | Doubtful [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
0
|
| 2024/2023 |
0
|
|
0
|
|
0
|
| 2023/2022 |
0
|
|
0
|
|
0
|
| 2022/2021 |
0
|
|
0
|
|
0
|
| Prior |
0
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
0
|
|
0
|
|
0
|
| Commercial [Member] | Other [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
3,699
|
|
3,699
|
|
4,453
|
| 2025/2024 |
3,666
|
|
3,666
|
|
1,332
|
| 2024/2023 |
856
|
|
856
|
|
6,346
|
| 2023/2022 |
5,293
|
|
5,293
|
|
1,228
|
| 2022/2021 |
1,028
|
|
1,028
|
|
137
|
| Prior |
1,595
|
|
1,595
|
|
1,218
|
| Revolving Loans Amortized Cost Basis |
3,872
|
|
3,872
|
|
3,622
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
20,009
|
|
20,009
|
|
18,336
|
| 2026/2025 |
|
|
0
|
|
0
|
| 2025/2024 |
|
|
0
|
|
0
|
| 2024/2023 |
|
|
0
|
|
0
|
| 2023/2022 |
|
|
0
|
|
0
|
| 2022/2021 |
|
|
0
|
|
0
|
| Prior |
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis Writeoffs |
|
|
0
|
|
0
|
| Revolving Loan Converted to Term Writeoffs |
|
|
0
|
|
0
|
| Current-period Gross writeoffs |
|
|
0
|
|
0
|
| Commercial [Member] | Other [Member] | Pass [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
3,699
|
|
3,699
|
|
4,453
|
| 2025/2024 |
3,666
|
|
3,666
|
|
1,322
|
| 2024/2023 |
856
|
|
856
|
|
6,346
|
| 2023/2022 |
5,248
|
|
5,248
|
|
1,228
|
| 2022/2021 |
1,028
|
|
1,028
|
|
136
|
| Prior |
1,595
|
|
1,595
|
|
1,218
|
| Revolving Loans Amortized Cost Basis |
3,872
|
|
3,872
|
|
3,538
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
19,964
|
|
19,964
|
|
18,241
|
| Commercial [Member] | Other [Member] | Special Mention [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
0
|
| 2024/2023 |
0
|
|
0
|
|
0
|
| 2023/2022 |
45
|
|
45
|
|
0
|
| 2022/2021 |
0
|
|
0
|
|
0
|
| Prior |
0
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
45
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
45
|
|
45
|
|
45
|
| Commercial [Member] | Other [Member] | Substandard [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
10
|
| 2024/2023 |
0
|
|
0
|
|
0
|
| 2023/2022 |
0
|
|
0
|
|
0
|
| 2022/2021 |
0
|
|
0
|
|
1
|
| Prior |
0
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
39
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
0
|
|
0
|
|
50
|
| Commercial [Member] | Other [Member] | Doubtful [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
0
|
| 2024/2023 |
0
|
|
0
|
|
0
|
| 2023/2022 |
0
|
|
0
|
|
0
|
| 2022/2021 |
0
|
|
0
|
|
0
|
| Prior |
0
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
0
|
|
0
|
|
0
|
| Real Estate Mortgage - 1 to 4 Family [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| Total loans |
5,112,441
|
|
5,112,441
|
|
4,927,461
|
| Current-period Gross writeoffs |
0
|
0
|
0
|
99
|
|
| Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
419,274
|
|
419,274
|
|
382,926
|
| 2025/2024 |
373,610
|
|
373,610
|
|
308,123
|
| 2024/2023 |
281,450
|
|
281,450
|
|
367,683
|
| 2023/2022 |
341,497
|
|
341,497
|
|
501,014
|
| 2022/2021 |
476,192
|
|
476,192
|
|
759,470
|
| Prior |
2,650,899
|
|
2,650,899
|
|
2,078,355
|
| Revolving Loans Amortized Cost Basis |
2,795
|
|
2,795
|
|
1,653
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
4,545,717
|
|
4,545,717
|
|
4,399,224
|
| 2026/2025 |
|
|
0
|
|
0
|
| 2025/2024 |
|
|
0
|
|
0
|
| 2024/2023 |
|
|
0
|
|
0
|
| 2023/2022 |
|
|
0
|
|
0
|
| 2022/2021 |
|
|
0
|
|
0
|
| Prior |
|
|
0
|
|
99
|
| Revolving Loans Amortized Cost Basis Writeoffs |
|
|
0
|
|
0
|
| Revolving Loan Converted to Term Writeoffs |
|
|
0
|
|
0
|
| Current-period Gross writeoffs |
|
|
0
|
|
99
|
| Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Performing [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
419,274
|
|
419,274
|
|
382,926
|
| 2025/2024 |
373,610
|
|
373,610
|
|
307,952
|
| 2024/2023 |
280,729
|
|
280,729
|
|
366,470
|
| 2023/2022 |
340,436
|
|
340,436
|
|
499,812
|
| 2022/2021 |
474,360
|
|
474,360
|
|
757,834
|
| Prior |
2,638,452
|
|
2,638,452
|
|
2,066,631
|
| Revolving Loans Amortized Cost Basis |
2,634
|
|
2,634
|
|
1,653
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
4,529,495
|
|
4,529,495
|
|
4,383,278
|
| Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Nonperforming [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
171
|
| 2024/2023 |
721
|
|
721
|
|
1,213
|
| 2023/2022 |
1,061
|
|
1,061
|
|
1,202
|
| 2022/2021 |
1,832
|
|
1,832
|
|
1,636
|
| Prior |
12,447
|
|
12,447
|
|
11,724
|
| Revolving Loans Amortized Cost Basis |
161
|
|
161
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
16,222
|
|
16,222
|
|
15,946
|
| Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
12,946
|
|
12,946
|
|
17,600
|
| 2025/2024 |
15,338
|
|
15,338
|
|
5,386
|
| 2024/2023 |
4,457
|
|
4,457
|
|
7,138
|
| 2023/2022 |
6,329
|
|
6,329
|
|
4,450
|
| 2022/2021 |
3,940
|
|
3,940
|
|
5,328
|
| Prior |
25,626
|
|
25,626
|
|
24,134
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
68,636
|
|
68,636
|
|
64,036
|
| 2026/2025 |
|
|
0
|
|
0
|
| 2025/2024 |
|
|
0
|
|
0
|
| 2024/2023 |
|
|
0
|
|
0
|
| 2023/2022 |
|
|
0
|
|
0
|
| 2022/2021 |
|
|
0
|
|
0
|
| Prior |
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis Writeoffs |
|
|
0
|
|
0
|
| Revolving Loan Converted to Term Writeoffs |
|
|
0
|
|
0
|
| Current-period Gross writeoffs |
|
|
0
|
|
0
|
| Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Performing [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
12,946
|
|
12,946
|
|
17,600
|
| 2025/2024 |
15,323
|
|
15,323
|
|
5,386
|
| 2024/2023 |
4,457
|
|
4,457
|
|
7,138
|
| 2023/2022 |
6,329
|
|
6,329
|
|
4,384
|
| 2022/2021 |
3,874
|
|
3,874
|
|
5,328
|
| Prior |
25,269
|
|
25,269
|
|
23,770
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
68,198
|
|
68,198
|
|
63,606
|
| Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Nonperforming [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
15
|
|
15
|
|
0
|
| 2024/2023 |
0
|
|
0
|
|
0
|
| 2023/2022 |
0
|
|
0
|
|
66
|
| 2022/2021 |
66
|
|
66
|
|
0
|
| Prior |
357
|
|
357
|
|
364
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
438
|
|
438
|
|
430
|
| Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Line of Credit [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
599
|
|
599
|
|
1,718
|
| 2025/2024 |
1,596
|
|
1,596
|
|
3,985
|
| 2024/2023 |
3,282
|
|
3,282
|
|
1,471
|
| 2023/2022 |
896
|
|
896
|
|
1,196
|
| 2022/2021 |
1,219
|
|
1,219
|
|
1,504
|
| Prior |
33,648
|
|
33,648
|
|
21,024
|
| Revolving Loans Amortized Cost Basis |
456,848
|
|
456,848
|
|
433,303
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
498,088
|
|
498,088
|
|
464,201
|
| 2026/2025 |
|
|
0
|
|
0
|
| 2025/2024 |
|
|
0
|
|
0
|
| 2024/2023 |
|
|
0
|
|
0
|
| 2023/2022 |
|
|
0
|
|
0
|
| 2022/2021 |
|
|
0
|
|
0
|
| Prior |
|
|
0
|
|
0
|
| Revolving Loans Amortized Cost Basis Writeoffs |
|
|
0
|
|
0
|
| Revolving Loan Converted to Term Writeoffs |
|
|
0
|
|
0
|
| Current-period Gross writeoffs |
|
|
0
|
|
0
|
| Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Line of Credit [Member] | Performing [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
599
|
|
599
|
|
1,718
|
| 2025/2024 |
1,596
|
|
1,596
|
|
3,985
|
| 2024/2023 |
3,095
|
|
3,095
|
|
1,471
|
| 2023/2022 |
766
|
|
766
|
|
1,196
|
| 2022/2021 |
1,159
|
|
1,159
|
|
1,504
|
| Prior |
31,935
|
|
31,935
|
|
19,145
|
| Revolving Loans Amortized Cost Basis |
456,577
|
|
456,577
|
|
432,926
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
495,727
|
|
495,727
|
|
461,945
|
| Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Line of Credit [Member] | Nonperforming [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
0
|
|
0
|
|
0
|
| 2024/2023 |
187
|
|
187
|
|
0
|
| 2023/2022 |
130
|
|
130
|
|
0
|
| 2022/2021 |
60
|
|
60
|
|
0
|
| Prior |
1,713
|
|
1,713
|
|
1,879
|
| Revolving Loans Amortized Cost Basis |
271
|
|
271
|
|
377
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
2,361
|
|
2,361
|
|
2,256
|
| Installment [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
1,746
|
|
1,746
|
|
3,089
|
| 2025/2024 |
2,220
|
|
2,220
|
|
1,973
|
| 2024/2023 |
1,279
|
|
1,279
|
|
3,195
|
| 2023/2022 |
1,835
|
|
1,835
|
|
1,588
|
| 2022/2021 |
880
|
|
880
|
|
257
|
| Prior |
670
|
|
670
|
|
562
|
| Revolving Loans Amortized Cost Basis |
809
|
|
809
|
|
892
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
9,439
|
|
9,439
|
|
11,556
|
| 2026/2025 |
|
|
0
|
|
9
|
| 2025/2024 |
|
|
22
|
|
102
|
| 2024/2023 |
|
|
1
|
|
17
|
| 2023/2022 |
|
|
18
|
|
20
|
| 2022/2021 |
|
|
8
|
|
27
|
| Prior |
|
|
9
|
|
42
|
| Revolving Loans Amortized Cost Basis Writeoffs |
|
|
0
|
|
0
|
| Revolving Loan Converted to Term Writeoffs |
|
|
0
|
|
0
|
| Current-period Gross writeoffs |
19
|
$ 22
|
58
|
$ 178
|
217
|
| Installment [Member] | Performing [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
1,746
|
|
1,746
|
|
3,089
|
| 2025/2024 |
2,220
|
|
2,220
|
|
1,973
|
| 2024/2023 |
1,275
|
|
1,275
|
|
3,191
|
| 2023/2022 |
1,835
|
|
1,835
|
|
1,542
|
| 2022/2021 |
847
|
|
847
|
|
257
|
| Prior |
669
|
|
669
|
|
561
|
| Revolving Loans Amortized Cost Basis |
809
|
|
809
|
|
892
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
9,401
|
|
9,401
|
|
11,505
|
| Installment [Member] | Nonperforming [Member] |
|
|
|
|
|
| Loan Portfolio and Allowance for Credit Losses [Abstract] |
|
|
|
|
|
| 2026/2025 |
0
|
|
0
|
|
0
|
| 2025/2024 |
|
|
|
|
0
|
| 2024/2023 |
4
|
|
4
|
|
4
|
| 2023/2022 |
0
|
|
0
|
|
46
|
| 2022/2021 |
33
|
|
33
|
|
0
|
| Prior |
1
|
|
1
|
|
1
|
| Revolving Loans Amortized Cost Basis |
0
|
|
0
|
|
0
|
| Revolving Loan Converted to Term |
0
|
|
0
|
|
0
|
| Total loans |
$ 38
|
|
$ 38
|
|
$ 51
|