Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	$ 80,548	$ 66,515
Loans past due 90 days or more and accruing	2,599	2,738
Total nonperforming loans	83,147	69,253
Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	19,231	15,817
Loans past due 90 days or more and accruing	8	10
Total nonperforming loans	19,239	15,827
Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	732	577
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	732	577
Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	2,929	1,565
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	2,929	1,565
Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	16,016	14,964
Loans past due 90 days or more and accruing	1,840	1,483
Total nonperforming loans	17,856	16,447
Residential Real Estate - HELOC [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	1,559	1,702
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	1,559	1,702
Residential Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	49	53
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	49	53
Construction Real Estate Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	91	97
Loans past due 90 days or more and accruing	126	17
Total nonperforming loans	217	114
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	37,249	28,879
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	37,249	28,879
Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	146	168
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	146	168
Consumer less GFSC and Check Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	2,546	2,693
Loans past due 90 days or more and accruing	625	1,228
Total nonperforming loans	$ 3,171	$ 3,921