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Description of the Business and Summary of Significant Accounting Policies - Impact of Adoption of CECL (Details) - USD ($) | Dec. 31, 2023 | Jan. 01, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Retained Earnings | $ 280,650,000 |  | $ 248,685,000 |  |
Allowance of loan loss | 50,494,000 | $ 48,646,000 | 47,996,000 | $ 40,020,000 | $ 34,841,000
Allowance for Credit Losses on Off-balance Sheet Credit Exposures | 2,985,000 | 5,210,000 | 360,000 |  |
Deferred taxes | 23,927,000 |  | 22,917,000 |  |
Transitional adjustments to retained earnings | 425,515,000 |  | 394,064,000 | 379,272,000 | 265,405,000
Commercial |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | 5,398,000 | 5,343,000 | 6,501,000 | 6,269,000 | 5,773,000
Construction and Land Development |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | 2,156,000 | 2,841,000 | 3,911,000 | 3,139,000 | 1,679,000
1-4 Family Construction |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | 558,000 | 610,000 | 845,000 | 618,000 | 812,000
1-4 Family Mortgage |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | 2,651,000 | 2,547,000 | 4,325,000 | 3,757,000 | 3,972,000
Multifamily |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | 22,217,000 | 20,777,000 | 17,459,000 | 12,610,000 | 9,517,000
CRE Owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | 1,184,000 | 1,022,000 | 1,965,000 | 1,495,000 | 1,162,000
CRE Non-owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | 16,225,000 | 15,445,000 | 12,576,000 | 11,335,000 | 10,991,000
Consumer and other |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss | $ 105,000 | 61,000 | 151,000 | 147,000 | 203,000
Unallocated |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | 263,000 | $ 650,000 | $ 732,000
Before Adoption |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 47,996,000 |  |  |
Allowance for Credit Losses on Off-balance Sheet Credit Exposures |  | 360,000 |  |  |
Before Adoption | Commercial |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 6,500,000 |  |  |
Before Adoption | Paycheck Protection Program (PPP), CARES Act |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 1,000 |  |  |
Before Adoption | Construction and Land Development |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 3,911,000 |  |  |
Before Adoption | 1-4 Family Construction |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 845,000 |  |  |
Before Adoption | 1-4 Family Mortgage |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 4,325,000 |  |  |
Before Adoption | Multifamily |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 17,459,000 |  |  |
Before Adoption | CRE Owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 1,965,000 |  |  |
Before Adoption | CRE Non-owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 12,576,000 |  |  |
Before Adoption | Consumer and other |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 151,000 |  |  |
Before Adoption | Unallocated |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 263,000 |  |  |
Impact of Adoption |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 650,000 |  |  |
Allowance for Credit Losses on Off-balance Sheet Credit Exposures |  | 4,850,000 |  |  |
Impact of Adoption | Commercial |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (1,157,000) |  |  |
Impact of Adoption | Paycheck Protection Program (PPP), CARES Act |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (1,000) |  |  |
Impact of Adoption | Construction and Land Development |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (1,070,000) |  |  |
Impact of Adoption | 1-4 Family Construction |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (235,000) |  |  |
Impact of Adoption | 1-4 Family Mortgage |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (1,778,000) |  |  |
Impact of Adoption | Multifamily |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 3,318,000 |  |  |
Impact of Adoption | CRE Owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (943,000) |  |  |
Impact of Adoption | CRE Non-owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | 2,869,000 |  |  |
Impact of Adoption | Consumer and other |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (90,000) |  |  |
Impact of Adoption | Unallocated |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  | (263,000) |  |  |
Cumulative Effect of Change |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | 650,000 |  |
Allowance for Credit Losses on Off-balance Sheet Credit Exposures |  |  | 4,850,000 |  |
Cumulative Effect of Change | Commercial |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | (1,158,000) |  |
Cumulative Effect of Change | Construction and Land Development |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | (1,070,000) |  |
Cumulative Effect of Change | 1-4 Family Construction |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | (235,000) |  |
Cumulative Effect of Change | 1-4 Family Mortgage |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | (1,778,000) |  |
Cumulative Effect of Change | Multifamily |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | 3,318,000 |  |
Cumulative Effect of Change | CRE Owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | (943,000) |  |
Cumulative Effect of Change | CRE Non-owner Occupied |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | 2,869,000 |  |
Cumulative Effect of Change | Consumer and other |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | (90,000) |  |
Cumulative Effect of Change | Unallocated |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Allowance of loan loss |  |  | (263,000) |  |
ASU 2016-13 | Cumulative Effect of Change |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Retained Earnings |  | 3,900,000 |  |  |
Allowance of loan loss |  | 650,000 |  |  |
Allowance for Credit Losses on Off-balance Sheet Credit Exposures |  | 4,800,000 |  |  |
Deferred taxes |  | $ 1,600,000 |  |  |
Transitional adjustments to retained earnings |  |  | (3,920,000) |  |
ASU 2023-02 | Cumulative Effect of Change |  |  |  |  |
Impact of Recently Adopted Accounting Guidance |  |  |  |  |
Transitional adjustments to retained earnings |  |  | $ (21,000) |  |

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