Loans Receivable - Summary of Portfolio Segments and Classes of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	$ 2,556,268	$ 2,255,104
Deferred costs	461	645
Allowance for credit losses	(31,674)	(26,435)	$ (23,767)
Net loans	2,525,055	2,229,314
Agriculture and Farmland Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	61,611	67,741
Construction Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	172,917	152,619
Allowance for credit losses	(2,113)	(893)	(959)
Commercial & Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	275,824	245,833
Multifamily [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	244,554	211,778
Allowance for credit losses	(1,871)	(1,805)	(1,483)
Owner Occupied [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	545,837	477,742
Non-owner Occupied [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	771,537	628,237
Allowance for credit losses	(7,075)	(9,345)	(5,773)
First Liens [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	377,108	373,469
Allowance for credit losses	(3,586)	(3,395)	(4,778)
Second Liens and Lines of Credit [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	87,051	76,713
Allowance for credit losses	(1,258)	(1,154)	(1,072)
Consumer and Other Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	17,062	17,086
Municipal Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	2,767	3,886
Allowance for credit losses	$ (27)	$ (48)	$ (79)