Loans And Leases (Impaired Loans) (Details) (USD $) In Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2011		Dec. 31, 2010
Financing Receivable, Impaired [Line Items]
Total impaired loans	$ 89,871		$ 112,739
Loans written down to fair value of collateral	51,792		67,496
Direct charge-offs	56,177		65,617
Charge-offs related to loans	23,941		39,962
Commercial, Financial, And Agricultural [Member] | Impaired Loans Without A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	10,885		10,071
Average Unpaid Principal Balance	12,592		24,816
Interest Income Recognized	239		907
Commercial, Financial, And Agricultural [Member] | Impaired Loans With A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	7,156		15,497
Related Allowance	3,064		6,343
Average Unpaid Principal Balance	9,787		20,078
Interest Income Recognized	206		406
Commercial, Financial, And Agricultural [Member] | Total Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	18,041		25,568
Related Allowance	3,064		6,343
Average Unpaid Principal Balance	22,379		44,894
Interest Income Recognized	445		1,313
Real Estate - Construction [Member] | Impaired Loans Without A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	24,699		31,827
Average Unpaid Principal Balance	29,589		43,857
Interest Income Recognized	187		652
Real Estate - Construction [Member] | Impaired Loans With A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	12,597		31,483
Related Allowance	1,478		6,986
Average Unpaid Principal Balance	23,254		39,053
Interest Income Recognized	150		307
Real Estate - Construction [Member] | Total Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	37,296		63,310
Related Allowance	1,478		6,986
Average Unpaid Principal Balance	52,843		82,910
Interest Income Recognized	337		959
Real Estate Secured - Residential [Member] | Impaired Loans Without A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	16,294		10,624
Average Unpaid Principal Balance	15,771		10,703
Interest Income Recognized	444		594
Real Estate Secured - Residential [Member] | Impaired Loans With A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	11,541		16,331
Related Allowance	2,550		3,273
Average Unpaid Principal Balance	15,555		13,245
Interest Income Recognized	351		470
Real Estate Secured - Residential [Member] | Total Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	27,835		26,955
Related Allowance	2,550		3,273
Average Unpaid Principal Balance	31,326		23,948
Interest Income Recognized	795		1,064
Real Estate Secured - Commercial [Member] | Impaired Loans Without A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	37,993		59,953
Average Unpaid Principal Balance	43,324		50,434
Interest Income Recognized	794		1,591
Real Estate Secured - Commercial [Member] | Impaired Loans With A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	48,338		70,606
Related Allowance	10,368		13,627
Average Unpaid Principal Balance	59,747		60,766
Interest Income Recognized	1,341		1,747
Real Estate Secured - Commercial [Member] | Total Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	86,331		130,559
Related Allowance	10,368		13,627
Average Unpaid Principal Balance	103,071		111,200
Interest Income Recognized	2,135		3,338
Consumer [Member] | Impaired Loans Without A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0		264
Average Unpaid Principal Balance	49		100
Interest Income Recognized	4		3
Consumer [Member] | Impaired Loans With A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	148		198
Related Allowance	148		68
Average Unpaid Principal Balance	49		222
Interest Income Recognized	2		13
Consumer [Member] | Total Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	148		462
Related Allowance	148		68
Average Unpaid Principal Balance	98		322
Interest Income Recognized	6		16
Impaired Loans Without A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	89,871	[1]	112,739	[2]
Average Unpaid Principal Balance	101,325		129,910
Interest Income Recognized	1,668		3,747
Impaired Loans With A Related Reserve [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	79,780	[3]	134,115	[4]
Related Allowance	17,608		30,297
Average Unpaid Principal Balance	108,392		133,364
Interest Income Recognized	2,050		2,943
Total Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	169,651		246,854
Related Allowance	17,608		30,297
Average Unpaid Principal Balance	209,717		263,274
Interest Income Recognized	$ 3,718		$ 6,690

[1] $51,792 of the $89,871 total impaired loans without a related reserve represents loans which had been written down to the fair value of the collateral through direct charge-offs of $56,177.

[2] $67,496 of the $112,739 total impaired loans without a related reserve represents loans which had been written down to the fair value of the collateral through direct charge-offs of $65,617.

[3] Charge-offs related to these loans totaled $23,941.

[4] Charge-offs related to these loans totaled $39,962.