Allowance For Credit Losses (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 87,966	$ 83,745
Financing Receivable, Allowance for Credit Loss, Writeoff	3,605	3,240
Financing Receivable, Allowance for Credit Loss, Recovery	3,013	2,399
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	592	841
Provision for Loan, Lease, and Other Losses	756	2,180
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	88,130	85,084
Ending balance	88,130	85,084
Commercial Financial And Agricultural [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,683	15,496
Financing Receivable, Allowance for Credit Loss, Writeoff	301	220
Financing Receivable, Allowance for Credit Loss, Recovery	337	171
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	(36)	49
Provision for Loan, Lease, and Other Losses	(1,311)	(476)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	11,408	14,971
Ending balance	11,408	14,971
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	19,571	16,374
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	14	22
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	(14)	(22)
Provision for Loan, Lease, and Other Losses	253	785
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	19,838	17,181
Ending balance	19,838	17,181
Construction Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	7,125	5,227
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	1,104	914
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	(1,104)	(914)
Provision for Loan, Lease, and Other Losses	(90)	(399)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	8,139	5,742
Ending balance	8,139	5,742
Residential Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	22,355	18,818
Financing Receivable, Allowance for Credit Loss, Writeoff	25	1
Financing Receivable, Allowance for Credit Loss, Recovery	45	82
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	(20)	(81)
Provision for Loan, Lease, and Other Losses	374	734
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	22,749	19,633
Ending balance	22,749	19,633
Consumer [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	26,081	27,713
Financing Receivable, Allowance for Credit Loss, Writeoff	3,279	3,019
Financing Receivable, Allowance for Credit Loss, Recovery	1,513	1,210
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	1,766	1,809
Provision for Loan, Lease, and Other Losses	1,500	1,490
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	25,815	27,394
Ending balance	25,815	27,394
Finance Leases Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	151	117
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery, Total	0	0
Provision for Loan, Lease, and Other Losses	30	46
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	181	163
Ending balance	$ 181	$ 163

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
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-Publisher SEC

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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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