Allowance for Credit Losses - Summary by Class of Loans, Carrying Value of Collateral Dependent Nonaccrual Loans and Type of Collateral (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	$ 21,500	$ 16,679
Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	20,860	16,547
Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	640	132
Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Agriculture and Farmland [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	362	0
Agriculture and Farmland [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	362	0
Agriculture and Farmland [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Agriculture and Farmland [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	160	9
Construction [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	160	9
Construction [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Construction [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Commercial and Industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	6,480	132
Commercial and Industrial [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	5,840	0
Commercial and Industrial [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	640	132
Commercial and Industrial [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Multifamily [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Multifamily [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Multifamily [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Multifamily [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	8,983	9,752
Owner Occupied [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	8,983	9,752
Owner Occupied [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Owner Occupied [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Non-owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	2,906	4,329
Non-owner Occupied [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	2,906	4,329
Non-owner Occupied [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Non-owner Occupied [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
First Liens [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	2,149	1,975
First Liens [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	2,149	1,975
First Liens [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
First Liens [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Second Liens and Lines of Credit [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	460	482
Second Liens and Lines of Credit [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	460	482
Second Liens and Lines of Credit [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Second Liens and Lines of Credit [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Municipal [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Municipal [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Municipal [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Municipal [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Consumer [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Consumer [Member] | Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Consumer [Member] | Business Assets [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	0	0
Consumer [Member] | Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual	$ 0	$ 0