Allowance for Credit Losses - Summary of Aging Analysis of the Recorded Investment of Past-Due Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 2,255,104	$ 2,128,110
Loans receivable	2,229,314	2,104,517
Loans, Aging Analysis [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	2,255,104	2,128,110
Loans, Aging Analysis [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	67,741	65,861
Loans, Aging Analysis [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	152,619	161,825
Loans, Aging Analysis [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	245,833	232,412
Loans, Aging Analysis [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	211,778	176,843
Loans, Aging Analysis [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	477,742	474,964
Loans, Aging Analysis [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	628,237	551,481
Loans, Aging Analysis [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	373,469	376,092
Loans, Aging Analysis [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	76,713	66,648
Loans, Aging Analysis [Member] | Consumer and Other Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	17,086	16,740
Loans, Aging Analysis [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	3,886	5,244
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	1,793	1,239
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	23	14
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	197	10
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	41	46
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	314	0
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	334	156
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	686	719
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	191	279
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Consumer and Other Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	7	15
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	1,097	3,451
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	1
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	660	2,802
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	86
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	317	419
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	119	128
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Consumer and Other Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	1	15
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	10,966	2,661
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	166	191
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	90	118
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	8,768	137
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	398	1,239
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	1,220	872
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	276	97
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Consumer and Other Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	48	7
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	13,856	7,351
Loans, Aging Analysis [Member] | Total Past Due [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	23	14
Loans, Aging Analysis [Member] | Total Past Due [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	363	201
Loans, Aging Analysis [Member] | Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	131	165
Loans, Aging Analysis [Member] | Total Past Due [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	314	0
Loans, Aging Analysis [Member] | Total Past Due [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	9,762	3,095
Loans, Aging Analysis [Member] | Total Past Due [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	398	1,325
Loans, Aging Analysis [Member] | Total Past Due [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	2,223	2,010
Loans, Aging Analysis [Member] | Total Past Due [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	586	504
Loans, Aging Analysis [Member] | Total Past Due [Member] | Consumer and Other Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	56	37
Loans, Aging Analysis [Member] | Total Past Due [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | Current [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	2,241,248	2,120,759
Loans, Aging Analysis [Member] | Current [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	67,718	65,847
Loans, Aging Analysis [Member] | Current [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	152,256	161,624
Loans, Aging Analysis [Member] | Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	245,702	232,247
Loans, Aging Analysis [Member] | Current [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	211,464	176,843
Loans, Aging Analysis [Member] | Current [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	467,980	471,869
Loans, Aging Analysis [Member] | Current [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	627,839	550,156
Loans, Aging Analysis [Member] | Current [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	371,246	374,082
Loans, Aging Analysis [Member] | Current [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	76,127	66,144
Loans, Aging Analysis [Member] | Current [Member] | Consumer and Other Loans [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	17,030	16,703
Loans, Aging Analysis [Member] | Current [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 3,886	$ 5,244