Allowance for Credit Losses - Summary of Aging Analysis of the Recorded Investment of Past-Due Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 2,556,268	$ 2,255,104
Loans receivable	2,525,055	2,229,314
Loans, Aging Analysis [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	2,556,268	2,255,104
Loans, Aging Analysis [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	61,611	67,741
Loans, Aging Analysis [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	172,917	152,619
Loans, Aging Analysis [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	275,824	245,833
Loans, Aging Analysis [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	244,554	211,778
Loans, Aging Analysis [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	545,837	477,742
Loans, Aging Analysis [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	771,537	628,237
Loans, Aging Analysis [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	377,108	373,469
Loans, Aging Analysis [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	87,051	76,713
Loans, Aging Analysis [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	17,062	17,086
Loans, Aging Analysis [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	2,767	3,886
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	7,710	1,793
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	107	23
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	197
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	4,978	41
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	988	314
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	334
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	1,471	686
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	166	191
Loans, Aging Analysis [Member] | 30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	7
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	509	1,097
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	75	0
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	0	660
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	383	317
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	51	119
Loans, Aging Analysis [Member] | 60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	1
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	14,408	10,966
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	474	0
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	497	166
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	638	90
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	5,881	8,768
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	244	398
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	6,433	1,220
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	241	276
Loans, Aging Analysis [Member] | 90 Days or Greater Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	48
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	22,627	13,856
Loans, Aging Analysis [Member] | Total Past Due [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	581	23
Loans, Aging Analysis [Member] | Total Past Due [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	497	363
Loans, Aging Analysis [Member] | Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	5,691	131
Loans, Aging Analysis [Member] | Total Past Due [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	988	314
Loans, Aging Analysis [Member] | Total Past Due [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	5,881	9,762
Loans, Aging Analysis [Member] | Total Past Due [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	244	398
Loans, Aging Analysis [Member] | Total Past Due [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	8,287	2,223
Loans, Aging Analysis [Member] | Total Past Due [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	458	586
Loans, Aging Analysis [Member] | Total Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	0	56
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	2,533,641	2,241,248
Loans, Aging Analysis [Member] | Current [Member] | Agriculture and Farmland [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	61,030	67,718
Loans, Aging Analysis [Member] | Current [Member] | Construction [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	172,420	152,256
Loans, Aging Analysis [Member] | Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	270,133	245,702
Loans, Aging Analysis [Member] | Current [Member] | Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	243,566	211,464
Loans, Aging Analysis [Member] | Current [Member] | Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	539,956	467,980
Loans, Aging Analysis [Member] | Current [Member] | Non-owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	771,293	627,839
Loans, Aging Analysis [Member] | Current [Member] | First Liens [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	368,821	371,246
Loans, Aging Analysis [Member] | Current [Member] | Second Liens and Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	86,593	76,127
Loans, Aging Analysis [Member] | Current [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	17,062	17,030
Loans, Aging Analysis [Member] | Current [Member] | Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 2,767	$ 3,886