Loans And Allowance For Credit Losses - Schedule of Non-Accrual Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 24,306	$ 31,652
Commercial [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	5,057	5,370
Commercial [Member] | C&I [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	5,057	5,370
Agricultural [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	324	4,920
Real Estate [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	18,465	20,809
Real Estate [Member] | Construction & Development [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	1,567	708
Real Estate [Member] | Farm [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	85	1,173
Real Estate [Member] | Non - Owner Occupied CRE [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	2,321	2,671
Real Estate [Member] | Owner Occupied CRE [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	7,092	7,897
Real Estate [Member] | Residential [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	7,400	8,360
Consumer [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	460	553
Consumer [Member] | Auto [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	429	514
Consumer [Member] | Non - Auto [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 31	$ 39