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Fair Values of Assets and Liabilities - Schedule of Assets Measured on Nonrecurring Basis (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | $ 1,161,482 | $ 869,373
Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 34,923 | 34,776
Fair Value Measurement Of Assets On Nonrecurring Basis Net Losses On Impaired Loans | (6,606) | (2,127)
Other Real Estate Owned Assets Fair Value | 609 | 553
Fair Value Measurement Of Assets On Nonrecurring Basis Net Losses On Other Real Estate Owned | (6) | 0
Total Assets | 35,532 | 35,329
Fair Value Measurement Of Assets On Nonrecurring Basis Net Loss | (6,612) | (2,127)
Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | 0 | 0
Level 1 [Member] | Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 0 | 0
Other Real Estate Owned Assets Fair Value | 0 | 0
Total Assets | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | 1,128,163 | 850,512
Fair Value, Inputs, Level 2 [Member] | Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 25,215 | 23,140
Other Real Estate Owned Assets Fair Value | 609 | 553
Total Assets | 25,824 | 23,693
Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | 33,319 | 18,861
Level 3 [Member] | Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 9,708 | 11,636
Other Real Estate Owned Assets Fair Value | 0 | 0
Total Assets | $ 9,708 | $ 11,636

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