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Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financial Assets: |  |
Securities - available-for-sale | $ 347,516 | $ 358,478
Financial Liabilities: |  |
Subordinated notes, net of unamortized issuance costs | 34,731 | 34,702
Dividend payable | 2,975 | 2,974
Reported Value Measurement [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 187,782 | 142,201
Interest-bearing time deposits | 2,735 | 2,740
Securities - available-for-sale | 347,516 | 358,478
Other securities | 14,744 | 17,138
Loans held for sale | 2,410 | 1,576
Loans, net | 2,516,687 | 2,556,167
Interest receivable | 12,981 | 11,774
Financial Liabilities: |  |
Total Deposits | 2,621,382 | 2,607,463
Federal funds purchased and securities sold under agreement to repurchase | 28,218 | 28,218
Federal Home Loan Bank advances | 256,628 | 265,750
Subordinated notes, net of unamortized issuance costs | 34,731 | 34,702
Interest payable | 5,595 | 5,441
Fair Value [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 187,782 | 142,201
Interest-bearing time deposits | 2,718 | 2,725
Securities - available-for-sale | 347,516 | 358,478
Other securities | 14,744 | 17,138
Loans held for sale | 2,374 | 1,552
Loans, net | 2,435,500 | 2,396,540
Interest receivable | 12,981 | 11,774
Financial Liabilities: |  |
Total Deposits | 2,614,666 | 2,600,613
Federal funds purchased and securities sold under agreement to repurchase | 28,218 | 28,218
Federal Home Loan Bank advances | 254,906 | 260,400
Subordinated notes, net of unamortized issuance costs | 29,810 | 30,676
Interest payable | 5,595 | 5,441
Level 1 [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 187,782 | 142,201
Securities - available-for-sale | 94,218 | 99,900
Financial Liabilities: |  |
Total Deposits | 510,731 | 528,465
Level 2 [Member] |  |
Financial Assets: |  |
Interest-bearing time deposits | 2,718 | 2,725
Securities - available-for-sale | 251,503 | 256,118
Financial Liabilities: |  |
Subordinated notes, net of unamortized issuance costs | 29,810 | 30,676
Level 3 [Member] |  |
Financial Assets: |  |
Securities - available-for-sale | 1,795 | 2,460
Other securities | 14,744 | 17,138
Loans held for sale | 2,374 | 1,552
Loans, net | 2,435,500 | 2,396,540
Interest receivable | 12,981 | 11,774
Financial Liabilities: |  |
Total Deposits | 2,103,935 | 2,072,148
Federal funds purchased and securities sold under agreement to repurchase | 28,218 | 28,218
Federal Home Loan Bank advances | 254,906 | 260,400
Interest payable | 5,595 | 5,441
Interest Bearing Deposits [Member] | Reported Value Measurement [Member] |  |
Financial Liabilities: |  |
Total Deposits | 1,464,666 | 1,415,981
Interest Bearing Deposits [Member] | Fair Value [Member] |  |
Financial Liabilities: |  |
Total Deposits | 1,464,184 | 1,416,007
Interest Bearing Deposits [Member] | Level 3 [Member] |  |
Financial Liabilities: |  |
Total Deposits | 1,464,184 | 1,416,007
Non Interest Bearing Deposits [Member] | Reported Value Measurement [Member] |  |
Financial Liabilities: |  |
Total Deposits | 510,731 | 528,465
Non Interest Bearing Deposits [Member] | Fair Value [Member] |  |
Financial Liabilities: |  |
Total Deposits | 510,731 | 528,465
Non Interest Bearing Deposits [Member] | Level 1 [Member] |  |
Financial Liabilities: |  |
Total Deposits | 510,731 | 528,465
Time Deposits [Member] | Reported Value Measurement [Member] |  |
Financial Liabilities: |  |
Total Deposits | 645,985 | 663,017
Time Deposits [Member] | Fair Value [Member] |  |
Financial Liabilities: |  |
Total Deposits | 639,751 | 656,141
Time Deposits [Member] | Level 3 [Member] |  |
Financial Liabilities: |  |
Total Deposits | $ 639,751 | $ 656,141

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