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Loans (Nonaccrual) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	$ 63,352		$ 45,788
FinancingReceivableNonaccrualWithAllowance	26,241		22,390
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	91,758	$ 89,785	87,966	$ 87,237	$ 86,575	$ 83,745
Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	3,659		2,370
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	38,067		18,778
FinancingReceivableNonaccrualWithAllowance	7,946		5,463
Commercial Financial And Agricultural [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	2,427		1,261
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	21		8
FinancingReceivableNonaccrualWithAllowance	0		0
Construction Real Estate Commercial [Domain] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	0		0
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	1,394		3,755
FinancingReceivableNonaccrualWithAllowance	0		1,945
Residential Real Estate Commercial [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	0		39
Construction Real Estate Retail
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0		0
FinancingReceivableNonaccrualWithAllowance	58		22
Construction Real Estate Retail | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	39		1
Residential Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0		0
FinancingReceivableNonaccrualWithAllowance	13,456		11,368
Residential Real Estate - Mortgage [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	169		128
Residential Real Estate - HELOC [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0		0
FinancingReceivableNonaccrualWithAllowance	1,101		918
Residential Real Estate - HELOC [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	79		154
Residential Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0		0
FinancingReceivableNonaccrualWithAllowance	26		31
Residential Real Estate - Installment [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	19		1
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	23,801		23,230
FinancingReceivableNonaccrualWithAllowance	982		0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	20,515	20,499	19,571	18,856	16,855	16,374
Commercial Real Estate [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	124		0
Bank Overdrafts
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0		0
FinancingReceivableNonaccrualWithAllowance	0		0
Bank Overdrafts | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	0		0
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0		0
FinancingReceivableNonaccrualWithAllowance	2,501		2,643
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	25,475	25,716	26,081	27,997	27,579	27,713
Consumer [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	772		786
Check loans
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0		0
FinancingReceivableNonaccrualWithAllowance	0		0
Check loans | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	0		0
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual, No Allowance	69		17
FinancingReceivableNonaccrualWithAllowance	171		0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	256	$ 192	151	$ 165	$ 161	$ 117
Finance Leases Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	$ 30		$ 0

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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-Section 45
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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