Loans (TDR Number Of Contracts Modified And Recorded Investment) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) contracts	Sep. 30, 2016 USD ($) contracts	Sep. 30, 2017 USD ($) contracts	Sep. 30, 2016 USD ($) contracts
Financing Receivable, Recorded Investment [Line Items]
Additional Specific Reserves Related To Troubled Debt Restructuring	$ 0	$ 0	$ 290	$ 975
Troubled Debt Restructuring, Classification removed		$ 335	$ 0	$ 2,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	44	80	58	88
Number of Contracts | contracts	139	115	325	309
Total Recorded Investment	$ 4,938	$ 12,422	$ 10,765	$ 18,779
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 825	$ 3,869	$ 1,088	$ 3,951
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0	1	0
Total Recorded Investment			$ 8
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	1	5	1	5
Number of Contracts | contracts	14	12	25	29
Total Recorded Investment	$ 1,415	$ 6,603	$ 4,169	$ 7,344
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 20	$ 129	$ 20	$ 129
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	1	3	1	4
Number of Contracts | contracts	10	4	15	7
Total Recorded Investment	$ 498	$ 225	$ 702	$ 918
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 17	$ 679	$ 17	$ 709
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	6	13	6	13
Number of Contracts | contracts	5	14	24	23
Total Recorded Investment	$ 417	$ 1,173	$ 1,669	$ 1,809
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 427	$ 1,687	$ 426	$ 1,687
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0	0	1
Total Recorded Investment			$ 0	$ 9
Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	$ 151	$ 37	$ 216	$ 79
Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	2	0	3	0
Number of Contracts | contracts	4	2	16	10
Total Recorded Investment	$ 168	$ 91	$ 529	$ 201
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 27		$ 32
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	0	0	0	0
Number of Contracts | contracts	0	1	0	2
Total Recorded Investment		$ 947	$ 0	$ 1,144
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	33	53	45	60
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 262	$ 559	$ 345	$ 611
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 0	$ 0	$ 0	$ 0
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 0	$ 0	$ 0	$ 0
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	1	4	2	4
Number of Contracts | contracts	3	6	9	10
Total Recorded Investment	$ 1,455	$ 1,777	$ 2,320	$ 5,118
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 72	$ 808	$ 248	$ 808
Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	0	2	0	2
Number of Contracts | contracts	4	2	7	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 0	$ 7	$ 0	$ 7
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	99	74	228	223
Total Recorded Investment	$ 834	$ 1,569	$ 1,152	$ 2,157
Finance Leases Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period | contracts	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 0	$ 0	$ 0	$ 0
Accruing [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	2,061	246	3,608	3,214
Accruing [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	0	0	0	0
Accruing [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	400	152	400	102
Accruing [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	144		144
Accruing [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	211	0	746	96
Accruing [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	0	0	0	0
Accruing [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	110	33	175	72
Accruing [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	123	0	478	17
Accruing [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment			0
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	974		1,525	2,812
Accruing [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	99	61	140	115
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	2,877	12,176	7,157	15,565
Nonaccrual [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment			8
Nonaccrual [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	1,015	6,451	3,769	7,242
Nonaccrual [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	354	225	558	918
Nonaccrual [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	206	1,173	923	1,713
Nonaccrual [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment			0	9
Nonaccrual [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	41	4	41	7
Nonaccrual [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	45	91	51	184
Nonaccrual [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment		947	0	1,144
Nonaccrual [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	481	1,777	795	2,306
Nonaccrual [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	$ 735	$ 1,508	$ 1,012	$ 2,042