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Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financial Assets:
Securities - available-for-sale	$ 363,225	$ 390,789
Financial Liabilities:
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	34,644	34,586
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	71,193	84,409
Interest-bearing time deposits	3,485	4,442
Securities - available-for-sale	363,225	390,789
Other securities	17,535	9,799
Loans held for sale	1,459	827
Loans, net	2,490,883	2,336,074
Interest receivable	11,145	10,440
Financial Liabilities:
Total Deposits	2,468,740	2,468,864
Federal funds purchased and securities sold under agreement to repurchase	51,567	54,206
Federal Home Loan Bank advances	266,818	127,485
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	34,644	34,586
Interest payable	3,655	1,739
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	71,193	84,409
Interest-bearing time deposits	3,473	4,440
Securities - available-for-sale	363,225	390,789
Other securities	17,535	9,799
Loans held for sale	1,437	815
Loans, net	2,316,031	2,171,152
Interest receivable	11,145	10,440
Financial Liabilities:
Total Deposits	2,456,899	2,454,475
Federal funds purchased and securities sold under agreement to repurchase	51,567	54,206
Federal Home Loan Bank advances	263,316	125,761
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	29,070	30,993
Interest payable	3,655	1,739
Level 1 [Member]
Financial Assets:
Cash and cash equivalents	71,193	84,409
Securities - available-for-sale	86,127	94,678
Financial Liabilities:
Total Deposits	488,678	532,794
Level 2 [Member]
Financial Assets:
Interest-bearing time deposits	3,473	4,440
Securities - available-for-sale	273,989	292,766
Financial Liabilities:
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	29,070	30,993
Level 3 [Member]
Financial Assets:
Securities - available-for-sale	3,109	3,345
Other securities	17,535	9,799
Loans held for sale	1,437	815
Loans, net	2,316,031	2,171,152
Interest receivable	11,145	10,440
Financial Liabilities:
Total Deposits	1,968,221	1,921,681
Federal funds purchased and securities sold under agreement to repurchase	51,567	54,206
Federal Home Loan Bank advances	263,316	125,761
Interest payable	3,655	1,739
Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	1,351,305	1,378,090
Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	1,351,263	1,377,944
Interest Bearing Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	1,351,263	1,377,944
Non Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	488,678	532,794
Non Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	488,678	532,794
Non Interest Bearing Deposits [Member] | Level 1 [Member]
Financial Liabilities:
Total Deposits	488,678	532,794
Time Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	628,757	557,980
Time Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	616,958	543,737
Time Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	$ 616,958	$ 543,737

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