Loans (Recorded Investment In Financing Receivable Modified As TDR Within 12 Months) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) contracts	Mar. 31, 2018 USD ($) contracts	Dec. 31, 2018 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Troubled Debt Restructuring, Classification removed	$ 23	$ 324
Number of Contracts | contracts	55	56
Recorded Investment	$ 660	$ 1,377
Financing Receivable, Modifications, Recorded Investment, During Period	4,560	$ 1,835
Troubled Debt Restructuring Included In Nonaccrual Loans	23,700		$ 24,600
Nonaccrual Trouble Debt Restructuring Current	$ 18,000		$ 19,200
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	6	3
Recorded Investment	$ 153	$ 207
Financing Receivable, Modifications, Recorded Investment, During Period	$ 472	$ 55
Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	1
Recorded Investment		$ 17
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	3	7
Recorded Investment	$ 68	$ 536
Financing Receivable, Modifications, Recorded Investment, During Period	$ 564	$ 650
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	5	3
Recorded Investment	$ 68	$ 174
Financing Receivable, Modifications, Recorded Investment, During Period	81	339
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 189	$ 115
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Financing Receivable, Modifications, Recorded Investment, During Period	$ 480	$ 63
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 559	$ 364
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	1
Recorded Investment		$ 114
Financing Receivable, Modifications, Recorded Investment, During Period	$ 2,215	$ 249
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Recorded Investment	$ 0	$ 0
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Recorded Investment	$ 0	$ 0
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	1	0
Recorded Investment	$ 28	$ 0
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	40	41
Recorded Investment	$ 343	$ 329
Finance Leases Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Recorded Investment	$ 0	$ 0
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	652	429
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	54	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	251
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	94	102
Accruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	480	63
Accruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	24	13
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	3,908	1,406
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	472	55
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	510	650
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	81	88
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	95	13
Nonaccruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	535	351
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 2,215	$ 249