Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financial Assets:
Securities - available-for-sale	$ 358,478	$ 390,789
Financial Liabilities:
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	34,702	34,586
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	142,201	84,409
Interest-bearing time deposits	2,740	4,442
Securities - available-for-sale	358,478	390,789
Other securities	17,138	9,799
Loans held for sale	1,576	827
Loans, net	2,556,167	2,336,074
Interest receivable	11,774	10,440
Financial Liabilities:
Total Deposits	2,607,463	2,468,864
Fed funds purchased and securities sold under agreement to repurchase	28,218	54,206
Federal Home Loan Bank advances	265,750	127,485
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	34,702	34,586
Interest payable	5,441	1,739
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	142,201	84,409
Interest-bearing time deposits	2,725	4,440
Securities - available-for-sale	358,478	390,789
Other securities	17,138	9,799
Loans held for sale	1,552	815
Loans, net	2,396,540	2,171,152
Interest receivable	11,774	10,440
Financial Liabilities:
Total Deposits	2,600,613	2,454,475
Fed funds purchased and securities sold under agreement to repurchase	28,218	54,206
Federal Home Loan Bank advances	260,400	125,761
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	30,676	30,993
Interest payable	5,441	1,739
Level 1 [Member]
Financial Assets:
Cash and cash equivalents	142,201	84,409
Securities - available-for-sale	99,900	94,678
Financial Liabilities:
Total Deposits	528,465	532,794
Level 2 [Member]
Financial Assets:
Interest-bearing time deposits	2,725	4,440
Securities - available-for-sale	256,118	292,766
Financial Liabilities:
Other borrowings		10,000
Subordinated notes, net of unamortized issuance costs	30,676	30,993
Level 3 [Member]
Financial Assets:
Securities - available-for-sale	2,460	3,345
Other securities	17,138	9,799
Loans held for sale	1,552	815
Loans, net	2,396,540	2,171,152
Interest receivable	11,774	10,440
Financial Liabilities:
Total Deposits	2,072,148	1,921,681
Fed funds purchased and securities sold under agreement to repurchase	28,218	54,206
Federal Home Loan Bank advances	260,400	125,761
Interest payable	5,441	1,739
Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	1,415,981	1,378,090
Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	1,416,007	1,377,944
Interest Bearing Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	1,416,007	1,377,944
Non Interest Bearing Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	528,465	532,794
Non Interest Bearing Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	528,465	532,794
Non Interest Bearing Deposits [Member] | Level 1 [Member]
Financial Liabilities:
Total Deposits	528,465	532,794
Time Deposits [Member] | Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	663,017	557,980
Time Deposits [Member] | Fair Value [Member]
Financial Liabilities:
Total Deposits	656,141	543,737
Time Deposits [Member] | Level 3 [Member]
Financial Liabilities:
Total Deposits	$ 656,141	$ 543,737