Allowance For Loan Losses (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 3,027	$ 7,695	$ 6,445	$ 11,522
Financing Receivable, Allowance for Credit Losses, Recovery	3,434	6,609	6,276	13,450
Financing Receivables Allowance For Credit Losses Net Charge Offs	(407)	1,086	169	(1,928)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	55,408	60,257	54,352	59,468
Ending balance	57,427	57,911	57,427	57,911
Provision for Loan, Lease, and Other Losses	1,612	(1,260)	3,244	(3,485)
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	499	214	851	853
Financing Receivable, Allowance for Credit Losses, Recovery	281	347	572	594
Financing Receivables Allowance For Credit Losses Net Charge Offs	218	(133)	279	259
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,361	13,762	10,719	14,218
Ending balance	12,124	14,196	12,124	14,196
Provision for Loan, Lease, and Other Losses	981	301	1,684	237
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	153	5,274	283	6,068
Financing Receivable, Allowance for Credit Losses, Recovery	1,128	2,177	1,802	3,913
Financing Receivables Allowance For Credit Losses Net Charge Offs	(975)	3,097	(1,519)	2,155
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,296	15,754	8,808	15,899
Ending balance	9,467	11,062	9,467	11,062
Provision for Loan, Lease, and Other Losses	(804)	(1,595)	(860)	(2,682)
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	37	21	37	24
Financing Receivable, Allowance for Credit Losses, Recovery	679	3,023	964	5,974
Financing Receivables Allowance For Credit Losses Net Charge Offs	(642)	(3,002)	(927)	(5,950)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,755	8,121	8,652	6,855
Ending balance	8,670	7,821	8,670	7,821
Provision for Loan, Lease, and Other Losses	(727)	(3,302)	(909)	(4,984)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	735	680	1,157	1,276
Financing Receivable, Allowance for Credit Losses, Recovery	423	356	1,347	1,593
Financing Receivables Allowance For Credit Losses Net Charge Offs	312	324	(190)	(317)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	14,512	14,207	14,772	14,251
Ending balance	15,268	14,519	15,268	14,519
Provision for Loan, Lease, and Other Losses	1,068	636	306	(49)
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	1,603	1,506	4,117	3,301
Financing Receivable, Allowance for Credit Losses, Recovery	922	705	1,588	1,374
Financing Receivables Allowance For Credit Losses Net Charge Offs	681	801	2,529	1,927
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,484	8,413	11,401	8,245
Ending balance	11,898	10,313	11,898	10,313
Provision for Loan, Lease, and Other Losses	1,095	2,701	3,026	3,995
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	1	1	3	2
Financing Receivables Allowance For Credit Losses Net Charge Offs	(1)	(1)	(3)	(2)
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	$ (1)	$ (1)	$ (3)	$ (2)