Loans And Allowance For Credit Losses - Schedule of Non-Accrual Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 33,609	$ 24,325
Commercial [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	4,132	5,057
Commercial [Member] | C&I [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	4,132	5,057
Commercial [Member] | Muncipal [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	0	0
Agricultural [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	155	324
Real Estate [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	28,741	18,484
Real Estate [Member] | Construction & Development [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	1,444	1,567
Real Estate [Member] | Farm [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	4,804	85
Real Estate [Member] | Non - Owner Occupied CRE [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	8,022	2,321
Real Estate [Member] | Owner Occupied CRE [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	6,822	7,092
Real Estate [Member] | Residential [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	7,649	7,419
Consumer [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	581	460
Consumer [Member] | Auto [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	464	429
Consumer [Member] | Non - Auto [Member]
Loans And Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 117	$ 31