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Loans and ACL - Summary of Change in the ACL by Loan Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025		Mar. 31, 2024
Financing Receivable Impaired [Line Items]
ACL, beginning of period	$ 23,023	[1]	$ 35,893
(Recovery of) provision for credit losses - loans	0		0
Charge-offs	(2,789)		(2,702)
Recoveries	2,892		1,834
Net (charge-offs) recoveries	103		(868)
ACL, end of period	23,126		35,025
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
ACL, beginning of period	5,767		13,787
(Recovery of) provision for credit losses - loans	(189)		257
Charge-offs	(2,123)		(1,957)
Recoveries	2,271		1,532
Net (charge-offs) recoveries	148		(425)
ACL, end of period	5,726		13,619
Construction, Commercial [Member] | Real Estate [Member]
Financing Receivable Impaired [Line Items]
ACL, beginning of period	2,057		4,024
(Recovery of) provision for credit losses - loans	(65)		(428)
Charge-offs	0		0
Recoveries	0		0
Net (charge-offs) recoveries	0		0
ACL, end of period	1,992		3,596
Construction, Residential [Member] | Real Estate [Member]
Financing Receivable Impaired [Line Items]
ACL, beginning of period	540		1,094
(Recovery of) provision for credit losses - loans	12		(175)
Charge-offs	0		0
Recoveries	0		0
Net (charge-offs) recoveries	0		0
ACL, end of period	552		919
Commercial [Member] | Real Estate [Member]
Financing Receivable Impaired [Line Items]
ACL, beginning of period	5,963		9,929
(Recovery of) provision for credit losses - loans	(240)		(97)
Charge-offs	(63)		0
Recoveries	338		0
Net (charge-offs) recoveries	275		0
ACL, end of period	5,998		9,832
Residential [Member] | Real Estate [Member]
Financing Receivable Impaired [Line Items]
ACL, beginning of period	7,933		6,286
(Recovery of) provision for credit losses - loans	253		39
Charge-offs	(16)		0
Recoveries	1		13
Net (charge-offs) recoveries	(15)		13
ACL, end of period	8,171		6,338
Farmland [Member] | Real Estate [Member]
Financing Receivable Impaired [Line Items]
ACL, beginning of period	18		15
(Recovery of) provision for credit losses - loans	0		3
Charge-offs	0		0
Recoveries	0		0
Net (charge-offs) recoveries	0		0
ACL, end of period	18		18
Consumer [Member]
Financing Receivable Impaired [Line Items]
ACL, beginning of period	745		758
(Recovery of) provision for credit losses - loans	229		401
Charge-offs	(587)		(745)
Recoveries	282		289
Net (charge-offs) recoveries	(305)		(456)
ACL, end of period	$ 669		$ 703
[1] Derived from audited December 31, 2024 Consolidated Financial Statements.

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