Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial Assets:
Securities - available-for-sale	$ 395,485	$ 429,931
Financial Liabilities:
Other borrowings	10,000	40,000
Subordinated notes, net of unamortized issuance costs	34,557	34,471
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	70,670	180,823
Interest-bearing time deposits	5,187	10,913
Securities - available-for-sale	395,485	429,931
Other securities	8,227	8,162
Loans held for sale	2,182	7,714
Loans, net	2,122,626	1,841,177
Interest receivable	9,856	7,209
Financial Liabilities:
Total Deposits	2,283,036	2,193,462
Federal funds purchased and securities sold under agreement to repurchase	55,802	29,268
Federal Home Loan Bank advances	102,147	24,065
Other borrowings	10,000	40,000
Subordinated notes, net of unamortized issuance costs	34,557	34,471
Interest payable	787	1,125
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	70,670	180,823
Interest-bearing time deposits	5,187	10,933
Securities - available-for-sale	395,485	429,931
Other securities	8,227	8,162
Loans held for sale	2,219	7,844
Loans, net	2,080,950	1,864,386
Interest receivable	9,856	7,209
Financial Liabilities:
Total Deposits	2,270,176	2,197,543
Federal funds purchased and securities sold under agreement to repurchase	55,802	29,268
Federal Home Loan Bank advances	103,588	24,305
Other borrowings	10,000	40,000
Subordinated notes, net of unamortized issuance costs	35,003	35,000
Interest payable	787	1,125
Level 1 [Member]
Financial Assets:
Cash and cash equivalents	70,670	180,823
Securities - available-for-sale	95,162	89,177
Level 2 [Member]
Financial Assets:
Interest-bearing time deposits	5,187	10,933
Securities - available-for-sale	296,957	335,981
Financial Liabilities:
Total Deposits	506,928	473,689
Other borrowings	10,000	40,000
Subordinated notes, net of unamortized issuance costs	35,003	35,000
Level 3 [Member]
Financial Assets:
Securities - available-for-sale	3,366	4,773
Other securities	8,227	8,162
Loans held for sale	2,219	7,844
Loans, net	2,080,950	1,864,386
Interest receivable	9,856	7,209
Financial Liabilities:
Total Deposits	1,763,248	1,723,854
Federal funds purchased and securities sold under agreement to repurchase	55,802	29,268
Federal Home Loan Bank advances	103,588	24,305
Interest payable	787	1,125
Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	1,313,263	1,248,294
Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	1,313,263	1,248,044
Interest Bearing Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	1,313,263	1,248,044
Non Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	506,928	473,689
Non Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	506,928	473,689
Non Interest Bearing Deposits [Member] | Level 2 [Member]
Financial Liabilities:
Total Deposits	506,928	473,689
Time Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	462,845	471,479
Time Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	449,985	475,810
Time Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	$ 449,985	$ 475,810