Allowance For Loan Losses (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 3,716	$ 3,985	$ 10,161	$ 15,507
Financing Receivable, Allowance for Credit Losses, Recovery	2,368	3,585	8,644	17,035
Financing Receivables Allowance For Credit Losses Net Charge Offs	1,348	4,738	1,517	2,810
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	57,427	57,911	54,352	59,468
Ending balance	58,483	57,674	58,483	57,674
Provision for Loan, Lease, and Other Losses	2,404	4,501	5,648	1,016
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	829	874	1,680	1,727
Financing Receivable, Allowance for Credit Losses, Recovery	415	161	987	755
Financing Receivables Allowance For Credit Losses Net Charge Offs	414	1,310	693	1,569
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,124	14,196	10,719	14,218
Ending balance	13,259	13,022	13,259	13,022
Provision for Loan, Lease, and Other Losses	1,549	136	3,233	373
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	46	463	329	6,531
Financing Receivable, Allowance for Credit Losses, Recovery	386	161	2,188	4,074
Financing Receivables Allowance For Credit Losses Net Charge Offs	(340)	1,769	(1,859)	3,924
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,467	11,062	8,808	15,899
Ending balance	9,455	10,429	9,455	10,429
Provision for Loan, Lease, and Other Losses	(352)	1,136	(1,212)	(1,546)
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	4	11	41	35
Financing Receivable, Allowance for Credit Losses, Recovery	274	2,368	1,238	8,342
Financing Receivables Allowance For Credit Losses Net Charge Offs	(270)	(1,095)	(1,197)	(7,045)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,670	7,821	8,652	6,855
Ending balance	8,990	8,654	8,990	8,654
Provision for Loan, Lease, and Other Losses	50	(262)	(859)	(5,246)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	575	623	1,732	1,899
Financing Receivable, Allowance for Credit Losses, Recovery	461	284	1,808	1,877
Financing Receivables Allowance For Credit Losses Net Charge Offs	114	1,351	(76)	1,034
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	15,268	14,519	14,772	14,251
Ending balance	15,022	14,846	15,022	14,846
Provision for Loan, Lease, and Other Losses	(132)	1,678	174	1,629
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	2,262	2,014	6,379	5,315
Financing Receivable, Allowance for Credit Losses, Recovery	832	607	2,420	1,981
Financing Receivables Allowance For Credit Losses Net Charge Offs	1,430	1,407	3,959	3,334
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,898	10,313	11,401	8,245
Ending balance	11,757	10,723	11,757	10,723
Provision for Loan, Lease, and Other Losses	1,289	1,817	4,315	5,812
Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0	0	0
Financing Receivable, Allowance for Credit Losses, Recovery	0	4	3	6
Financing Receivables Allowance For Credit Losses Net Charge Offs	0	(4)	(3)	(6)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0	0	0
Ending balance	0	0	0	0
Provision for Loan, Lease, and Other Losses	$ 0	(4)	$ (3)	(6)
Commercial loans held for sale [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs		4,338		4,338
Commercial loans held for sale [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs		597		597
Commercial loans held for sale [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs		1,467		1,467
Commercial loans held for sale [Member] | Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs		1,262		1,262
Commercial loans held for sale [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs		1,012		1,012
Commercial loans held for sale [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs		0		0
Commercial loans held for sale [Member] | Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs		$ 0		$ 0