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Allowance for Credit Losses - Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	$ 13,845	$ 16,849
Nonaccrual loans without a related ACL	17,144	14,101
Total, Non-Accrual Status	30,989	30,950
Commercial and Agriculture [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	7,351	8,901
Nonaccrual loans without a related ACL	5,353	3,370
Total, Non-Accrual Status	12,704	12,271
Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL		36
Nonaccrual loans without a related ACL	2,959
Total, Non-Accrual Status	2,959	36
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	1,034	2,514
Nonaccrual loans without a related ACL	7,200	8,000
Total, Non-Accrual Status	8,234	10,514
Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	5,079	4,745
Nonaccrual loans without a related ACL	1,515	2,131
Total, Non-Accrual Status	6,594	6,876
Lease Financing Receivable [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	353	638
Nonaccrual loans without a related ACL	117	600
Total, Non-Accrual Status	470	1,238
Consumer and Other [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	28	15
Total, Non-Accrual Status	$ 28	$ 15

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