Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 69,224	$ 76,231	$ 69,224	$ 76,231	$ 73,712
Average recorded investment	69,933	89,455	69,541	98,690
Interest income recognized	409	664	1,513	2,081
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	19,154	23,186	19,154	23,186
Average recorded investment	19,793	18,764	19,056	19,362
Interest income recognized	35	68	306	204
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,045	2,097	2,045	2,097
Average recorded investment	2,068	3,653	2,073	4,130
Interest income recognized	0	12	8	134
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	5,993	5,970	5,993	5,970
Average recorded investment	6,059	8,561	5,771	9,587
Interest income recognized	2	2	13	56
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	24,370	23,640	24,370	23,640
Average recorded investment	24,560	27,765	24,784	29,632
Interest income recognized	240	255	768	825
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	17,662	21,303	17,662	21,303
Average recorded investment	17,453	30,644	17,857	35,458
Interest income recognized	132	327	418	862
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment		35		35
Average recorded investment		68		521
Interest income recognized	$ 0	$ 0	$ 0	$ 0