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Allowance for Credit Losses - Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	$ 5,511	$ 1,198
Nonaccrual loans without a related ACL	9,698	11,269
Total Nonaccrual loans	15,209	12,467
Commercial and Agriculture [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	1,485	914
Nonaccrual loans without a related ACL	2,641	4,891
Total Nonaccrual loans	4,126	5,805
Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	219	269
Nonaccrual loans without a related ACL	138	3
Total Nonaccrual loans	357	272
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	3,006
Nonaccrual loans without a related ACL		1,167
Total Nonaccrual loans	3,006	1,167
Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	6,075	4,633
Total Nonaccrual loans	6,075	4,633
Real Estate Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans without a related ACL		41
Total Nonaccrual loans		41
Lease Financing Receivables [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans with a related ACL	801	15
Nonaccrual loans without a related ACL	823	492
Total Nonaccrual loans	1,624	507
Consumer and Other [Member]
Financing Receivable Recorded Investment [Line Items]
Nonaccrual loans without a related ACL	21	42
Total Nonaccrual loans	$ 21	$ 42

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