v3.25.4
Loans and Allowance for Credit Losses - Summary of Nonaccrual Interest Income Written Off (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Past Due [Line Items]      
Non-accrual interest income written off $ 1,395 $ 1,009 $ 719
Commercial Real Estate [Member]      
Financing Receivable, Past Due [Line Items]      
Non-accrual interest income written off 217 227 115
Commercial and Industrial [Member]      
Financing Receivable, Past Due [Line Items]      
Non-accrual interest income written off 910 405 309
Residential Real Estate [Member]      
Financing Receivable, Past Due [Line Items]      
Non-accrual interest income written off 60 55 277
Agricultural Real Estate [Member]      
Financing Receivable, Past Due [Line Items]      
Non-accrual interest income written off 83 203 6
Agricultural [Member]      
Financing Receivable, Past Due [Line Items]      
Non-accrual interest income written off 107 103 2
Consumer [Member]      
Financing Receivable, Past Due [Line Items]      
Non-accrual interest income written off $ 18 $ 16 $ 10