Loans and Leases - Allowance for Credit Losses, Loans and Leases, Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 87,091	$ 85,387
Provision for credit losses	2,385	1,651
Charge-offs	(2,031)	(1,602)
Recoveries	345	196
Ending balance	87,790	85,632
Commercial, financial and agricultural
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	16,079	13,699
Provision for credit losses	2,679	815
Charge-offs	(1,557)	(593)
Recoveries	326	11
Ending balance	17,527	13,932
Real estate-commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	46,867	45,849
Provision for credit losses	315	1
Charge-offs	(20)	0
Recoveries	4	3
Ending balance	47,166	45,853
Real estate-construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,924	6,543
Provision for credit losses	(174)	211
Charge-offs	0	(500)
Recoveries	0	0
Ending balance	4,750	6,254
Real estate-residential secured for business purpose
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	7,491	8,692
Provision for credit losses	16	106
Charge-offs	0	0
Recoveries	0	2
Ending balance	7,507	8,800
Residential secured for personal purpose
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	7,222	6,349
Provision for credit losses	(828)	154
Charge-offs	0	0
Recoveries	0	134
Ending balance	6,394	6,637
Real estate-home equity secured for personal purpose
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,706	1,289
Provision for credit losses	(140)	(105)
Charge-offs	0	0
Recoveries	0	0
Ending balance	1,566	1,184
Loans to individuals
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	342	392
Provision for credit losses	144	235
Charge-offs	(165)	(279)
Recoveries	7	40
Ending balance	328	388
Lease financings
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,460	2,574
Provision for credit losses	373	234
Charge-offs	(289)	(230)
Recoveries	8	6
Ending balance	$ 2,552	$ 2,584

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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- Definition

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

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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

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