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Loans Receivable - Summary of Portfolio Segments and Classes of Loans (Detail) - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | --- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | $ 2,355,869 |  | $ 2,255,104 |  |  |
Deferred costs | 740 |  | 645 |  |  |
Allowance for credit losses | (24,651) | $ (26,619) | (26,435) | $ (26,288) | $ (23,842) | $ (23,767)
Net loans | 2,331,958 |  | 2,229,314 |  |  |
Agriculture and Farmland Loans [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 61,996 |  | 67,741 |  |  |
Construction Loans [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 140,976 |  | 152,619 |  |  |
Allowance for credit losses | (1,478) | (1,360) | (893) | (1,841) | (1,523) | (959)
Commercial & Industrial Loans [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 259,877 |  | 245,833 |  |  |
Multifamily [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 231,469 |  | 211,778 |  |  |
Allowance for credit losses | (1,879) | (1,813) | (1,805) | (1,914) | (1,592) | (1,483)
Owner Occupied [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 502,515 |  | 477,742 |  |  |
Non-owner Occupied [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 681,521 |  | 628,237 |  |  |
Allowance for credit losses | (6,724) | (9,050) | (9,345) | (8,026) | (6,099) | (5,773)
First Liens [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 375,879 |  | 373,469 |  |  |
Allowance for credit losses | (3,227) | (3,299) | (3,395) | (4,047) | (4,675) | (4,778)
Second Liens and Lines of Credit [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 81,194 |  | 76,713 |  |  |
Allowance for credit losses | (1,188) | (1,208) | (1,154) | (977) | (1,071) | (1,072)
Consumer and Other Loans [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 17,525 |  | 17,086 |  |  |
Municipal Loans [Member] |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans receivable | 2,917 |  | 3,886 |  |  |
Allowance for credit losses | $ (37) | $ (36) | $ (48) | $ (64) | $ (68) | $ (79)

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