Allowance For Loan Losses (Activity In The Allowance For Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 58,696	$ 120,174	$ 68,444	$ 143,575	$ 107,310
Charge-offs	22,878	31,859	51,909	85,670
Recoveries	3,092	2,557	8,799	6,351
Net Charge-offs	19,786	29,302	43,110	79,319
Provision	16,655	16,438	30,231	43,054
Ending balance	55,565	107,310	55,565	107,310	55,565
Allowance for Loan Losses Increase (Decrease) During Period					51,745
Vision Bank [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		41,500		41,500
Commercial, Financial And Agricultural [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	15,220	16,709	16,950	11,555
Charge-offs	16,515	5,199	26,476	12,370
Recoveries	215	154	807	1,050
Net Charge-offs	16,300	5,045	25,669	11,320
Provision	14,746	3,358	22,385	14,787
Ending balance	13,666	15,022	13,666	15,022	13,666
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,956	23,307	15,539	24,369
Charge-offs	953	6,505	6,822	14,855
Recoveries	164	845	503	1,669
Net Charge-offs	789	5,660	6,319	13,186
Provision	(294)	912	1,653	7,376
Ending balance	10,873	18,559	10,873	18,559	10,873
Construction Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,693	40,113	14,433	70,462
Charge-offs	2,969	12,587	8,298	39,686
Recoveries	690	621	2,456	834
Net Charge-offs	2,279	11,966	5,842	38,852
Provision	1,596	8,240	2,419	4,777
Ending balance	11,010	36,387	11,010	36,387	11,010
Residential Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	13,806	32,297	15,692	30,259
Charge-offs	1,159	5,886	6,782	13,162
Recoveries	1,421	341	3,217	1,232
Net Charge-offs	(262)	5,545	3,565	11,930
Provision	(179)	3,533	1,762	11,956
Ending balance	13,889	30,285	13,889	30,285	13,889
Consumer [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,021	7,744	5,830	6,925
Charge-offs	1,282	1,682	3,531	5,597
Recoveries	602	595	1,816	1,562
Net Charge-offs	680	1,087	1,715	4,035
Provision	786	396	2,012	4,163
Ending balance	6,127	7,053	6,127	7,053	6,127
Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	4	0	5
Charge-offs	0	0	0	0
Recoveries	0	1	0	4
Net Charge-offs	0	(1)	0	(4)
Provision	0	(1)	0	(5)
Ending balance	$ 0	$ 4	$ 0	$ 4	$ 0