Allowance For Loan Losses (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 4,419	$ 3,027	$ 7,820	$ 6,445
Financing Receivable, Allowance for Credit Losses, Recovery	3,533	3,434	6,478	6,276
Financing Receivables Allowance For Credit Losses Net Charge Offs	886	(407)	1,342	169
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	56,948	55,408	56,494	54,352
Ending balance	58,699	57,427	58,699	57,427
Provision for Loan, Lease, and Other Losses	2,637	1,612	3,547	3,244
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	870	499	1,144	851
Financing Receivable, Allowance for Credit Losses, Recovery	216	281	643	572
Financing Receivables Allowance For Credit Losses Net Charge Offs	654	218	501	279
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	14,240	11,361	13,694	10,719
Ending balance	16,478	12,124	16,478	12,124
Provision for Loan, Lease, and Other Losses	2,892	981	3,285	1,684
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	77	153	78	283
Financing Receivable, Allowance for Credit Losses, Recovery	1,814	1,128	2,032	1,802
Financing Receivables Allowance For Credit Losses Net Charge Offs	(1,737)	(975)	(1,954)	(1,519)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,452	9,296	9,197	8,808
Ending balance	9,203	9,467	9,203	9,467
Provision for Loan, Lease, and Other Losses	(1,986)	(804)	(1,948)	(860)
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	18	37	18	37
Financing Receivable, Allowance for Credit Losses, Recovery	110	679	1,049	964
Financing Receivables Allowance For Credit Losses Net Charge Offs	(92)	(642)	(1,031)	(927)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,687	8,755	8,564	8,652
Ending balance	8,256	8,670	8,256	8,670
Provision for Loan, Lease, and Other Losses	(523)	(727)	(1,339)	(909)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	736	735	1,483	1,157
Financing Receivable, Allowance for Credit Losses, Recovery	407	423	878	1,347
Financing Receivables Allowance For Credit Losses Net Charge Offs	329	312	605	(190)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	13,388	14,512	13,514	14,772
Ending balance	13,180	15,268	13,180	15,268
Provision for Loan, Lease, and Other Losses	121	1,068	271	306
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	2,718	1,603	5,097	4,117
Financing Receivable, Allowance for Credit Losses, Recovery	985	922	1,875	1,588
Financing Receivables Allowance For Credit Losses Net Charge Offs	1,733	681	3,222	2,529
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,180	11,484	11,524	11,401
Ending balance	11,581	11,898	11,581	11,898
Provision for Loan, Lease, and Other Losses	2,134	1,095	3,279	3,026
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	1	3
Financing Receivables Allowance For Credit Losses Net Charge Offs	(1)	(1)	(1)	(3)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1	0	1	0
Ending balance	1	0	1	0
Provision for Loan, Lease, and Other Losses	$ (1)	$ (1)	$ (1)	$ (3)