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Loans and Asset Quality - Schedule of Loans by Risk Rating (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | $ 305,238 |  | $ 393,355
Current period, year two | 349,395 |  | 520,330
Current period, year three | 441,683 |  | 449,175
Current period, year four | 393,755 |  | 197,368
Current period, year five | 173,525 |  | 110,545
Current period, prior years | 218,923 |  | 174,461
Current period, revolving lines | 173,529 |  | 147,624
Total | 2,056,048 |  | 1,992,858
Gross charge-offs, year one | 7 |  | 12
Gross charge-offs, year two | 27 |  | 20
Gross charge-offs, year three | 27 |  | 1
Gross charge-offs, year four | 1 |  | 0
Gross charge-offs, year five | 0 |  | 10
Gross charge-offs, prior years | 153 |  | 25
Gross charge-offs, revolving lines | 330 |  | 405
Gross charge-offs, Total | 545 | $ 348 | 473
Real estate | Commercial real estate |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 113,491 |  | 124,391
Current period, year two | 110,436 |  | 257,486
Current period, year three | 240,034 |  | 243,225
Current period, year four | 222,359 |  | 76,754
Current period, year five | 70,707 |  | 64,506
Current period, prior years | 92,253 |  | 66,753
Current period, revolving lines | 26,310 |  | 18,467
Total | 875,590 |  | 851,582
Gross charge-offs, Total | 0 | 0 |
Real estate | Commercial real estate | Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 110,418 |  | 124,134
Current period, year two | 110,026 |  | 256,707
Current period, year three | 237,793 |  | 239,364
Current period, year four | 221,675 |  | 76,754
Current period, year five | 70,707 |  | 63,475
Current period, prior years | 90,857 |  | 61,957
Current period, revolving lines | 26,310 |  | 18,467
Total | 867,786 |  | 840,858
Real estate | Commercial real estate | Special Mention |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 3,073 |  | 73
Current period, year two | 227 |  | 0
Current period, year three | 1,494 |  | 3,186
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 1,031
Current period, prior years | 661 |  | 4,082
Current period, revolving lines | 0 |  | 0
Total | 5,455 |  | 8,372
Real estate | Commercial real estate | Substandard |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 184
Current period, year two | 183 |  | 779
Current period, year three | 747 |  | 675
Current period, year four | 684 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 735 |  | 714
Current period, revolving lines | 0 |  | 0
Total | 2,349 |  | 2,352
Real estate | One-to-four family residential |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 76,395 |  | 122,004
Current period, year two | 109,718 |  | 134,662
Current period, year three | 121,603 |  | 129,388
Current period, year four | 116,958 |  | 90,227
Current period, year five | 81,352 |  | 31,495
Current period, prior years | 91,746 |  | 75,165
Current period, revolving lines | 18,695 |  | 16,546
Total | 616,467 |  | 599,487
Gross charge-offs, Total | 0 | 0 |
Real estate | One-to-four family residential | Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 76,264 |  | 122,004
Current period, year two | 109,718 |  | 134,583
Current period, year three | 121,231 |  | 129,388
Current period, year four | 116,108 |  | 90,190
Current period, year five | 81,318 |  | 31,110
Current period, prior years | 90,646 |  | 74,077
Current period, revolving lines | 17,885 |  | 16,472
Total | 613,170 |  | 597,824
Real estate | One-to-four family residential | Special Mention |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 131 |  | 0
Current period, year two | 0 |  | 0
Current period, year three | 0 |  | 0
Current period, year four | 807 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 257 |  | 261
Current period, revolving lines | 0 |  | 0
Total | 1,195 |  | 261
Real estate | One-to-four family residential | Substandard |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 0
Current period, year two | 0 |  | 79
Current period, year three | 372 |  | 0
Current period, year four | 43 |  | 37
Current period, year five | 34 |  | 385
Current period, prior years | 843 |  | 827
Current period, revolving lines | 810 |  | 74
Total | 2,102 |  | 1,402
Real estate | Construction and development |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 41,907 |  | 54,189
Current period, year two | 65,564 |  | 55,515
Current period, year three | 25,662 |  | 10,333
Current period, year four | 4,206 |  | 1,742
Current period, year five | 802 |  | 2,158
Current period, prior years | 2,007 |  | 1,015
Current period, revolving lines | 1,377 |  | 286
Total | 141,525 |  | 125,238
Gross charge-offs, Total | 0 | 9 |
Real estate | Construction and development | Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 41,907 |  | 54,189
Current period, year two | 64,646 |  | 55,515
Current period, year three | 25,662 |  | 10,333
Current period, year four | 4,206 |  | 1,742
Current period, year five | 802 |  | 2,158
Current period, prior years | 1,754 |  | 1,015
Current period, revolving lines | 1,377 |  | 286
Total | 140,354 |  | 125,238
Real estate | Construction and development | Special Mention |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 0
Current period, year two | 0 |  | 0
Current period, year three | 0 |  | 0
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 0 |  | 0
Current period, revolving lines | 0 |  | 0
Total | 0 |  | 0
Real estate | Construction and development | Substandard |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 0
Current period, year two | 918 |  | 0
Current period, year three | 0 |  | 0
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 253 |  | 0
Current period, revolving lines | 0 |  | 0
Total | 1,171 |  | 0
Commercial and industrial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 57,851 |  | 74,865
Current period, year two | 53,227 |  | 50,574
Current period, year three | 35,796 |  | 55,730
Current period, year four | 42,127 |  | 13,868
Current period, year five | 9,122 |  | 7,773
Current period, prior years | 2,993 |  | 1,373
Current period, revolving lines | 125,953 |  | 111,144
Total | 327,069 |  | 315,327
Gross charge-offs, Total | 218 | 51 |
Commercial and industrial | Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 57,633 |  | 73,653
Current period, year two | 53,224 |  | 49,637
Current period, year three | 34,515 |  | 51,012
Current period, year four | 42,115 |  | 13,863
Current period, year five | 9,120 |  | 7,409
Current period, prior years | 2,909 |  | 813
Current period, revolving lines | 124,746 |  | 107,171
Total | 324,262 |  | 303,558
Commercial and industrial | Special Mention |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 192 |  | 1,208
Current period, year two | 0 |  | 937
Current period, year three | 1,250 |  | 4,659
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 310
Current period, prior years | 0 |  | 509
Current period, revolving lines | 564 |  | 3,173
Total | 2,006 |  | 10,796
Commercial and industrial | Substandard |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 26 |  | 4
Current period, year two | 3 |  | 0
Current period, year three | 31 |  | 59
Current period, year four | 12 |  | 5
Current period, year five | 2 |  | 54
Current period, prior years | 84 |  | 51
Current period, revolving lines | 643 |  | 800
Total | 801 |  | 973
Tax-exempt |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 2,487 |  | 959
Current period, year two | 1,606 |  | 15,679
Current period, year three | 14,977 |  | 8,174
Current period, year four | 6,625 |  | 13,919
Current period, year five | 11,123 |  | 4,250
Current period, prior years | 29,618 |  | 29,932
Current period, revolving lines | 0 |  | 0
Total | 66,436 |  | 72,913
Gross charge-offs, Total | 0 | 0 |
Tax-exempt | Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 2,487 |  | 959
Current period, year two | 1,606 |  | 15,679
Current period, year three | 14,977 |  | 8,174
Current period, year four | 6,625 |  | 13,919
Current period, year five | 11,123 |  | 4,250
Current period, prior years | 29,618 |  | 29,932
Current period, revolving lines | 0 |  | 0
Total | 66,436 |  | 72,913
Tax-exempt | Special Mention |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 0
Current period, year two | 0 |  | 0
Current period, year three | 0 |  | 0
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 0 |  | 0
Current period, revolving lines | 0 |  | 0
Total | 0 |  | 0
Tax-exempt | Substandard |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 0
Current period, year two | 0 |  | 0
Current period, year three | 0 |  | 0
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 0 |  | 0
Current period, revolving lines | 0 |  | 0
Total | 0 |  | 0
Consumer |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 13,107 |  | 16,947
Current period, year two | 8,844 |  | 6,414
Current period, year three | 3,611 |  | 2,325
Current period, year four | 1,480 |  | 858
Current period, year five | 419 |  | 363
Current period, prior years | 306 |  | 223
Current period, revolving lines | 1,194 |  | 1,181
Total | 28,961 |  | 28,311
Gross charge-offs, Total | 327 | $ 288 |
Consumer | Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 13,107 |  | 16,947
Current period, year two | 8,834 |  | 6,385
Current period, year three | 3,611 |  | 2,325
Current period, year four | 1,480 |  | 858
Current period, year five | 419 |  | 363
Current period, prior years | 215 |  | 133
Current period, revolving lines | 1,187 |  | 1,173
Total | 28,853 |  | 28,184
Consumer | Special Mention |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 0
Current period, year two | 0 |  | 0
Current period, year three | 0 |  | 0
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 0 |  | 0
Current period, revolving lines | 0 |  | 0
Total | 0 |  | 0
Consumer | Substandard |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Current period, year one | 0 |  | 0
Current period, year two | 10 |  | 29
Current period, year three | 0 |  | 0
Current period, year four | 0 |  | 0
Current period, year five | 0 |  | 0
Current period, prior years | 91 |  | 90
Current period, revolving lines | 7 |  | 8
Total | $ 108 |  | $ 127

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