Fair Value Measurement - Carrying Amount and Fair Value of Financial Instruments Not Measured at Fair Value on a Recurring or Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial Assets:
Cash and due from financial institutions	$ 52,723	$ 43,361
Other securities	35,383	33,585
Loans, net of allowance	2,545,870	2,518,155
Bank owned life insurance	53,796	53,543
Accrued interest receivable	10,254	11,178
Financial Liabilities:
Long-term FHLB advances	3,361	3,578
Other borrowings	13,938	15,516
Securities sold under agreement to repurchase	15,631	25,143
Carrying Amount [Member]
Financial Assets:
Cash and due from financial institutions	52,723	43,361
Other securities	35,383	33,585
Loans, held for sale	1,465	683
Loans, net of allowance	2,545,870	2,518,155
Bank owned life insurance	53,796	53,543
Accrued interest receivable	10,254	11,178
Financial Liabilities:
Nonmaturing deposits	2,316,737	2,300,215
Time deposits	526,779	319,769
Short-term FHLB advances	212,000	393,700
Long-term FHLB advances	3,361	3,578
Other borrowings	13,938	15,516
Securities sold under agreement to repurchase	15,631	25,143
Subordinated debentures	103,841	103,799
Accrued interest payable	1,628	668
Total Fair Value [Member]
Financial Assets:
Cash and due from financial institutions	52,723	43,361
Other securities	35,383	33,585
Loans, held for sale	1,495	698
Loans, net of allowance	2,450,816	2,427,291
Bank owned life insurance	53,796	53,543
Accrued interest receivable	10,254	11,178
Financial Liabilities:
Nonmaturing deposits	2,316,737	2,300,215
Time deposits	529,525	318,886
Short-term FHLB advances	211,595	393,247
Long-term FHLB advances	3,047	3,534
Other borrowings	14,199	15,806
Securities sold under agreement to repurchase	15,631	25,143
Subordinated debentures	102,529	98,513
Accrued interest payable	1,628	668
(Level 1) [Member]
Financial Assets:
Cash and due from financial institutions	52,723	43,361
Other securities	35,383	33,585
Loans, held for sale	1,495	698
Bank owned life insurance	53,796	53,543
Accrued interest receivable	10,254	11,178
Financial Liabilities:
Nonmaturing deposits	2,316,737	2,300,215
Short-term FHLB advances	211,595	393,247
Securities sold under agreement to repurchase	15,631	25,143
Accrued interest payable	1,628	668
(Level 3) [Member]
Financial Assets:
Loans, net of allowance	2,450,816	2,427,291
Financial Liabilities:
Time deposits	529,525	318,886
Long-term FHLB advances	3,047	3,534
Other borrowings	14,199	15,806
Subordinated debentures	$ 102,529	$ 98,513