Loans and Leases - Allowance for Credit Losses, Loans and Leases, Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 85,387	$ 79,004
Provision for credit losses	1,651	3,872
Charge-offs	(1,602)	(3,230)
Recoveries	196	388
Ending balance	85,632	80,034
Commercial, financial and agricultural
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	13,699	16,920
Provision for credit losses	815	547
Charge-offs	(593)	(2,848)
Recoveries	11	106
Ending balance	13,932	14,725
Real estate-commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	45,849	41,673
Provision for credit losses	1	1,524
Charge-offs	0	(50)
Recoveries	3	3
Ending balance	45,853	43,150
Real estate-construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,543	4,952
Provision for credit losses	211	(64)
Charge-offs	(500)	(207)
Recoveries	0	0
Ending balance	6,254	4,681
Real estate-residential secured for business purpose
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,692	7,054
Provision for credit losses	106	1,125
Charge-offs	0	0
Recoveries	2	181
Ending balance	8,800	8,360
Residential secured for personal purpose
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,349	3,685
Provision for credit losses	154	1,327
Charge-offs	0	0
Recoveries	134	0
Ending balance	6,637	5,012
Real estate-home equity secured for personal purpose
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,289	1,287
Provision for credit losses	(105)	(66)
Charge-offs	0	0
Recoveries	0	50
Ending balance	1,184	1,271
Loans to individuals
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	392	351
Provision for credit losses	235	113
Charge-offs	(279)	(105)
Recoveries	40	16
Ending balance	388	375
Lease financings
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,574	3,082
Provision for credit losses	234	(634)
Charge-offs	(230)	(20)
Recoveries	6	32
Ending balance	$ 2,584	$ 2,460

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

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