Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 70,596	$ 96,005	$ 70,596	$ 96,005	$ 73,712
Average recorded investment	67,192	99,863	69,468	103,585
Interest income recognized	542	737	1,104	1,417
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	20,429	17,628	20,429	17,628
Average recorded investment	18,220	18,867	18,830	19,456
Interest income recognized	140	75	271	136
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,047	4,378	2,047	4,378
Average recorded investment	2,068	4,329	2,072	4,439
Interest income recognized	0	66	8	122
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	6,032	9,954	6,032	9,954
Average recorded investment	5,611	10,150	5,644	10,227
Interest income recognized	6	7	11	54
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	24,441	28,775	24,441	28,775
Average recorded investment	24,443	30,212	24,864	30,577
Interest income recognized	273	307	528	570
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	17,647	35,138	17,647	35,138
Average recorded investment	16,850	35,638	18,058	38,163
Interest income recognized	123	282	286	535
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment		132		132
Average recorded investment		667		723
Interest income recognized	$ 0	$ 0	$ 0	$ 0