Fair Value Measurements - Summary of Estimated Fair Value of Financial Instruments that are not Required to be Measured or Reported at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial assets:
Cash and cash equivalents (Level 1)	$ 166,100	$ 80,190
Securities held to maturity (Level 2)	31,967	36,735
Financial liabilities:
Time Deposits (Level 3)	636,733
Long-term borrowings (Level 3)	112,549	72,034
Short-term borrowings (Level 1)	10,000	10,000
Note payable (Level 3)	565	590
Subordinated Notes (Level 3)	61,984	61,444
Carrying Amount [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents (Level 1)	166,100	80,190
Accrued interest receivable (Level 1)	9,870	9,831
Restricted investments in bank stock (Level 1)	5,209	3,965
Cash surrender value of life insurance (Level 1)	52,079	48,847
Financial liabilities:
Non-maturity deposits (Level 1)	1,723,849	1,604,535
Short-term borrowings (Level 1)	10,000	10,000
Accrued interest payable (Level 1)	1,865	1,466
Carrying Amount [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets:
Securities held to maturity (Level 2)	31,508	36,223
Carrying Amount [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans, net of allowance for credit losses (Level 3)	2,229,314	2,104,517
Financial liabilities:
Time Deposits (Level 3)	636,733	594,264
Long-term borrowings (Level 3)	40,000
Note payable (Level 3)	565	590
Subordinated Notes (Level 3)	61,984	61,444
Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents (Level 1)	166,100	80,190
Accrued interest receivable (Level 1)	9,870	9,831
Restricted investments in bank stock (Level 1)	5,209	3,965
Cash surrender value of life insurance (Level 1)	52,079	48,847
Financial liabilities:
Non-maturity deposits (Level 1)	1,723,849	1,604,535
Short-term borrowings (Level 1)	10,000	10,000
Accrued interest payable (Level 1)	1,865	1,466
Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets:
Securities held to maturity (Level 2)	30,284	34,236
Fair Value [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans, net of allowance for credit losses (Level 3)	2,231,057	2,027,937
Financial liabilities:
Time Deposits (Level 3)	634,875	589,699
Long-term borrowings (Level 3)	40,256
Note payable (Level 3)	565	590
Subordinated Notes (Level 3)	$ 60,251	$ 57,303