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Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financial Assets:
Securities - available-for-sale	$ 399,687	$ 429,931
Financial Liabilities:
Other borrowings		40,000
Subordinated notes, net of unamortized issuance costs	34,528	34,471
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	71,439	180,823
Interest-bearing time deposits	6,684	10,913
Securities - available-for-sale	399,687	429,931
Other securities	8,735	8,162
Loans held for sale	4,230	7,714
Loans, net	2,016,394	1,841,177
Interest receivable	8,008	7,209
Financial Liabilities:
Total Deposits	2,224,046	2,193,462
Federal funds purchased and securities sold under agreement to repurchase	71,944	29,268
Federal Home Loan Bank advances	42,635	24,065
Other borrowings		40,000
Subordinated notes, net of unamortized issuance costs	34,528	34,471
Interest payable	923	1,125
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	71,439	180,832
Interest-bearing time deposits	6,687	10,933
Securities - available-for-sale	399,687	429,931
Other securities	8,735	8,162
Loans held for sale	4,301	7,844
Loans, net	2,042,904	1,864,386
Interest receivable	8,008	7,209
Financial Liabilities:
Total Deposits	2,207,477	2,197,543
Federal funds purchased and securities sold under agreement to repurchase	71,944	29,268
Federal Home Loan Bank advances	42,930	24,305
Other borrowings		40,000
Subordinated notes, net of unamortized issuance costs	35,000	35,000
Interest payable	923	1,125
Level 1 [Member]
Financial Assets:
Cash and cash equivalents	71,439	180,823
Securities - available-for-sale	97,100	89,177
Level 2 [Member]
Financial Assets:
Interest-bearing time deposits	6,687	10,933
Securities - available-for-sale	299,173	335,981
Financial Liabilities:
Total Deposits	503,395	473,689
Other borrowings		40,000
Subordinated notes, net of unamortized issuance costs	35,000	35,000
Level 3 [Member]
Financial Assets:
Securities - available-for-sale	3,414	4,773
Other securities	8,735	8,162
Loans held for sale	4,301	7,844
Loans, net	2,042,904	1,864,386
Interest receivable	8,008	7,209
Financial Liabilities:
Total Deposits	1,704,082	1,723,854
Federal funds purchased and securities sold under agreement to repurchase	71,944	29,268
Federal Home Loan Bank advances	42,930	24,305
Interest payable	923	1,125
Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	1,296,402	1,248,294
Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	1,288,006	1,248,044
Interest Bearing Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	1,288,006	1,248,044
Non Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	503,395	473,689
Non Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	503,395	473,689
Non Interest Bearing Deposits [Member] | Level 2 [Member]
Financial Liabilities:
Total Deposits	503,395	473,689
Time Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	424,249	471,479
Time Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	416,076	475,810
Time Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	$ 416,076	$ 475,810

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