Fair Value - Summary of Financial Assets Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	$ 354,341	$ 373,532
Investment securities, Fair Value	354,341	373,532
Mortgage derivative asset	112	1,900
Mortgage derivative liability	24	75
State and Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	50,993	51,113
U.S. Treasury and Agencies [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	67,162	64,066
Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	39,850	39,243
Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale		3,000
Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	342,435	351,552
Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	11,906	18,980
Fair Value, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities, Fair Value	354,341	373,532
MSR assets	28,991
Rabbi trust assets	584	994
Mortgage derivative asset	112	1,876
Interest rate swap asset	95	199
Mortgage derivative liability	24	75
Interest rate swap liability	95	199
Fair Value, Recurring [Member] | State and Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	50,993	51,113
Fair Value, Recurring [Member] | U.S. Treasury and Agencies [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	67,162	64,066
Fair Value, Recurring [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	196,336	219,110
Fair Value, Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	39,850	39,243
Fair Value, Recurring [Member] | Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities, Fair Value		3,000
Rabbi trust assets	584	994
Fair Value, Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale		3,000
Fair Value, Recurring [Member] | Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities, Fair Value	342,435	351,552
Mortgage derivative asset	112	1,876
Interest rate swap asset	95	199
Mortgage derivative liability	24	75
Interest rate swap liability	95	199
Fair Value, Recurring [Member] | Level 2 [Member] | State and Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	50,993	51,113
Fair Value, Recurring [Member] | Level 2 [Member] | U.S. Treasury and Agencies [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	67,162	64,066
Fair Value, Recurring [Member] | Level 2 [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	188,719	211,194
Fair Value, Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	35,561	25,179
Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities, Fair Value	11,906	18,980
MSR assets	28,991
Fair Value, Recurring [Member] | Level 3 [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	7,617	7,916
Fair Value, Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale	$ 4,289	$ 11,064