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Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financial Assets:
Securities - available-for-sale	$ 429,931	$ 307,812
Financial Liabilities:
Other borrowings	40,000
Subordinated notes, net of unamortized issuance costs	34,471
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	180,823	175,706
Interest-bearing time deposits	10,913	4,653
Securities - available-for-sale	429,931	307,812
Other securities	8,162	5,939
Loans held for sale	7,714	7,740
Loans, net	1,841,177	1,289,318
Interest receivable	7,209	6,188
Financial Liabilities:
Total Deposits	2,193,462	1,596,162
Fed funds purchased and securities sold under agreement to repurchase	29,268	30,239
Federal Home Loan Bank advances	24,065	17,861
Other borrowings	40,000
Subordinated notes, net of unamortized issuance costs	34,471
Interest payable	1,125	338
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	180,832	175,706
Interest-bearing time deposits	10,933	4,677
Securities - available-for-sale	429,931	307,812
Other securities	8,162	5,939
Loans held for sale	7,844	7,740
Loans, net	1,864,386	1,261,440
Interest receivable	7,209	6,188
Financial Liabilities:
Total Deposits	2,197,543	1,605,890
Fed funds purchased and securities sold under agreement to repurchase	29,268	30,239
Federal Home Loan Bank advances	24,305	17,872
Other borrowings	40,000
Subordinated notes, net of unamortized issuance costs	35,000
Interest payable	1,125	338
Level 1 [Member]
Financial Assets:
Cash and cash equivalents	180,823	175,706
Securities - available-for-sale	89,177
Level 2 [Member]
Financial Assets:
Interest-bearing time deposits	10,933	4,677
Securities - available-for-sale	335,981	306,250
Financial Liabilities:
Total Deposits	473,689	351,147
Other borrowings	40,000
Subordinated notes, net of unamortized issuance costs	35,000
Level 3 [Member]
Financial Assets:
Securities - available-for-sale	4,773	1,562
Other securities	8,162	5,939
Loans held for sale	7,844	7,740
Loans, net	1,864,386	1,261,440
Interest receivable	7,209	6,188
Financial Liabilities:
Total Deposits	1,723,854	1,254,743
Fed funds purchased and securities sold under agreement to repurchase	29,268	30,239
Federal Home Loan Bank advances	24,305	17,872
Interest payable	1,125	338
Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	1,248,294	997,462
Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	1,248,044	1,004,608
Interest Bearing Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	1,248,044	1,004,608
Non Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	473,689	351,147
Non Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	473,689	351,147
Non Interest Bearing Deposits [Member] | Level 2 [Member]
Financial Liabilities:
Total Deposits	473,689	351,147
Time Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	471,479	247,553
Time Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	475,810	250,135
Time Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	$ 475,810	$ 250,135

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