Allowance For Credit Losses (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 88,130	$ 85,084	$ 87,966	$ 83,745
Financing Receivable, Allowance for Credit Loss, Writeoff	3,959	3,097	7,564	6,337
Financing Receivable, Allowance for Credit Loss, Recovery	2,761	1,475	5,774	3,874
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	1,198	1,622	1,790	2,463
Provision for Loan, Lease, and Other Losses	2,853	3,113	3,609	5,293
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	89,785	86,575	89,785	86,575
Ending balance	89,785	86,575	89,785	86,575
Commercial Financial And Agricultural [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,408	14,971	12,683	15,496
Financing Receivable, Allowance for Credit Loss, Writeoff	272	286	573	506
Financing Receivable, Allowance for Credit Loss, Recovery	187	90	524	261
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	85	196	49	245
Provision for Loan, Lease, and Other Losses	(220)	1,888	(1,531)	1,412
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	11,103	16,663	11,103	16,663
Ending balance	11,103	16,663	11,103	16,663
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	19,838	17,181	19,571	16,374
Financing Receivable, Allowance for Credit Loss, Writeoff	68	0	68	0
Financing Receivable, Allowance for Credit Loss, Recovery	784	5	798	27
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	(716)	(5)	(730)	(27)
Provision for Loan, Lease, and Other Losses	(55)	(331)	198	454
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	20,499	16,855	20,499	16,855
Ending balance	20,499	16,855	20,499	16,855
Construction Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,139	5,742	7,125	5,227
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	7	119	1,111	1,033
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	(7)	(119)	(1,111)	(1,033)
Provision for Loan, Lease, and Other Losses	(381)	6	(471)	(393)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	7,765	5,867	7,765	5,867
Ending balance	7,765	5,867	7,765	5,867
Residential Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	22,749	19,633	22,355	18,818
Financing Receivable, Allowance for Credit Loss, Writeoff	100	30	125	31
Financing Receivable, Allowance for Credit Loss, Recovery	55	185	100	267
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	45	(155)	25	(236)
Provision for Loan, Lease, and Other Losses	1,806	(338)	2,180	396
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	24,510	19,450	24,510	19,450
Ending balance	24,510	19,450	24,510	19,450
Consumer [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	25,815	27,394	26,081	27,713
Financing Receivable, Allowance for Credit Loss, Writeoff	3,519	2,781	6,798	5,800
Financing Receivable, Allowance for Credit Loss, Recovery	1,728	1,076	3,241	2,286
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	1,791	1,705	3,557	3,514
Provision for Loan, Lease, and Other Losses	1,692	1,890	3,192	3,380
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	25,716	27,579	25,716	27,579
Ending balance	25,716	27,579	25,716	27,579
Finance Leases Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	181	163	151	117
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	0	0	0	0
Provision for Loan, Lease, and Other Losses	11	(2)	41	44
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	192	161	192	161
Ending balance	$ 192	$ 161	$ 192	$ 161

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

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-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
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- Definition

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

+ References

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

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