Loans and Allowance for Loan Losses (Schedule Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	$ 103,154	$ 103,154		$ 94,001
Recorded Investment, With allowance recorded	482,340	482,340		742,553
Recorded Investment	585,494	585,494		836,554
Unpaid Principal Balance, With no related allowance recorded	207,658	207,658		181,809
Unpaid Principal Balance, With allowance recorded	484,711	484,711		782,252
Unpaid Principal Balance	692,369	692,369		964,061
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	41,484	41,484		67,997
Related Allowance	41,484	41,484		67,997
Average Recorded Investment, With no related allowance recorded	100,712	95,048		122,367
Average Recorded Investment, With allowance recorded	550,012	625,374		829,865
Average Recorded Investment	650,724	720,422		952,232
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	3,987	7,980		21,114
Interest Income Recognized	3,987	7,980	0	21,114
Home Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	0	0		0
Recorded Investment, With allowance recorded	3,573	3,573		2,750
Recorded Investment	3,573	3,573		2,750
Unpaid Principal Balance, With no related allowance recorded	0	0		0
Unpaid Principal Balance, With allowance recorded	3,573	3,573		2,750
Unpaid Principal Balance	3,573	3,573		2,750
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	85	85		116
Related Allowance	85	85		116
Average Recorded Investment, With no related allowance recorded	0	0		33
Average Recorded Investment, With allowance recorded	3,342	2,974		4,668
Average Recorded Investment	3,342	2,974		4,701
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	32	32		176
Interest Income Recognized	32	32		176
Consumer Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	2,310	2,310		1,180
Recorded Investment, With allowance recorded	39,781	39,781		44,019
Recorded Investment	42,091	42,091		45,199
Unpaid Principal Balance, With no related allowance recorded	2,527	2,527		2,840
Unpaid Principal Balance, With allowance recorded	39,781	39,781		44,019
Unpaid Principal Balance	42,308	42,308		46,859
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	779	779		967
Related Allowance	779	779		967
Average Recorded Investment, With no related allowance recorded	1,889	1,271		1,487
Average Recorded Investment, With allowance recorded	39,940	41,265		48,674
Average Recorded Investment	41,829	42,536		50,161
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	471	541		1,910
Interest Income Recognized	471	541		1,910
Credit Card Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	0	0		0
Recorded Investment, With allowance recorded	0	0		0
Recorded Investment	0	0		0
Unpaid Principal Balance, With no related allowance recorded	0	0		0
Unpaid Principal Balance, With allowance recorded	0	0		0
Unpaid Principal Balance	0	0		0
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	0	0		0
Related Allowance	0	0		0
Average Recorded Investment, With no related allowance recorded	0	0		0
Average Recorded Investment, With allowance recorded	0	0		0
Average Recorded Investment	0	0		0
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	0	0		0
Interest Income Recognized	0	0		0
Other Retail Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	0	0		0
Recorded Investment, With allowance recorded	5,517	5,517		7,013
Recorded Investment	5,517	5,517		7,013
Unpaid Principal Balance, With no related allowance recorded	0	0		0
Unpaid Principal Balance, With allowance recorded	5,517	5,517		7,013
Unpaid Principal Balance	5,517	5,517		7,013
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	97	97		109
Related Allowance	97	97		109
Average Recorded Investment, With no related allowance recorded	0	0		4
Average Recorded Investment, With allowance recorded	5,275	4,753		5,555
Average Recorded Investment	5,275	4,753		5,559
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	85	141		285
Interest Income Recognized	85	141		285
Investment Properties [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	34,064	34,064		14,218
Recorded Investment, With allowance recorded	120,684	120,684		186,058
Recorded Investment	154,748	154,748		200,276
Unpaid Principal Balance, With no related allowance recorded	45,351	45,351		15,820
Unpaid Principal Balance, With allowance recorded	121,771	121,771		193,765
Unpaid Principal Balance	167,122	167,122		209,585
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	3,757	3,757		8,863
Related Allowance	3,757	3,757		8,863
Average Recorded Investment, With no related allowance recorded	27,491	20,840		18,046
Average Recorded Investment, With allowance recorded	136,574	152,469		226,987
Average Recorded Investment	164,065	173,309		245,033
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	992	2,070		5,062
Interest Income Recognized	992	2,070		5,062
1-4 Family Properties [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	4,036	4,036		9,679
Recorded Investment, With allowance recorded	93,058	93,058		115,063
Recorded Investment	97,094	97,094		124,742
Unpaid Principal Balance, With no related allowance recorded	21,206	21,206		29,741
Unpaid Principal Balance, With allowance recorded	93,916	93,916		117,410
Unpaid Principal Balance	115,122	115,122		147,151
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	12,782	12,782		11,126
Related Allowance	12,782	12,782		11,126
Average Recorded Investment, With no related allowance recorded	5,219	6,901		23,879
Average Recorded Investment, With allowance recorded	95,931	103,152		115,614
Average Recorded Investment	101,150	110,053		139,493
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	763	1,577		3,464
Interest Income Recognized	763	1,577		3,464
Land Acquisition [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	30,896	30,896		30,595
Recorded Investment, With allowance recorded	48,676	48,676		183,029
Recorded Investment	79,572	79,572		213,624
Unpaid Principal Balance, With no related allowance recorded	94,899	94,899		78,470
Unpaid Principal Balance, With allowance recorded	48,780	48,780		202,048
Unpaid Principal Balance	143,679	143,679		280,518
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	4,931	4,931		26,789
Related Allowance	4,931	4,931		26,789
Average Recorded Investment, With no related allowance recorded	34,596	31,988		41,007
Average Recorded Investment, With allowance recorded	86,284	130,032		191,807
Average Recorded Investment	120,880	162,020		232,814
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	374	846		2,931
Interest Income Recognized	374	846		2,931
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	68,996	68,996		54,492
Recorded Investment, With allowance recorded	262,418	262,418		484,150
Recorded Investment	331,414	331,414		538,642
Unpaid Principal Balance, With no related allowance recorded	161,456	161,456		124,031
Unpaid Principal Balance, With allowance recorded	264,467	264,467		513,223
Unpaid Principal Balance	425,923	425,923		637,254
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	21,470	21,470		46,778
Related Allowance	21,470	21,470		46,778
Average Recorded Investment, With no related allowance recorded	67,306	59,729		82,932
Average Recorded Investment, With allowance recorded	318,789	385,653		534,408
Average Recorded Investment	386,095	445,382		617,340
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	2,129	4,493		11,457
Interest Income Recognized	2,129	4,493		11,457
Commercial, Financial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	10,242	10,242		13,490
Recorded Investment, With allowance recorded	80,669	80,669		112,291
Recorded Investment	90,911	90,911		125,781
Unpaid Principal Balance, With no related allowance recorded	20,296	20,296		22,312
Unpaid Principal Balance, With allowance recorded	80,834	80,834		117,049
Unpaid Principal Balance	101,130	101,130		139,361
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	14,666	14,666		15,364
Related Allowance	14,666	14,666		15,364
Average Recorded Investment, With no related allowance recorded	10,046	11,483		15,355
Average Recorded Investment, With allowance recorded	94,848	100,319		126,242
Average Recorded Investment	104,894	111,802		141,597
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	503	1,261		3,534
Interest Income Recognized	503	1,261		3,534
Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	21,606	21,606		24,839
Recorded Investment, With allowance recorded	80,850	80,850		86,661
Recorded Investment	102,456	102,456		111,500
Unpaid Principal Balance, With no related allowance recorded	23,379	23,379		32,626
Unpaid Principal Balance, With allowance recorded	81,007	81,007		92,529
Unpaid Principal Balance	104,386	104,386		125,155
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	3,943	3,943		4,327
Related Allowance	3,943	3,943		4,327
Average Recorded Investment, With no related allowance recorded	21,471	22,565		22,556
Average Recorded Investment, With allowance recorded	78,791	82,376		106,186
Average Recorded Investment	100,262	104,941		128,742
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	670	1,400		3,590
Interest Income Recognized	670	1,400		3,590
Small Business [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	0	0		0
Recorded Investment, With allowance recorded	9,532	9,532		5,669
Recorded Investment	9,532	9,532		5,669
Unpaid Principal Balance, With no related allowance recorded	0	0		0
Unpaid Principal Balance, With allowance recorded	9,532	9,532		5,669
Unpaid Principal Balance	9,532	9,532		5,669
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	444	444		336
Related Allowance	444	444		336
Average Recorded Investment, With no related allowance recorded	0	0		0
Average Recorded Investment, With allowance recorded	9,027	8,034		4,132
Average Recorded Investment	9,027	8,034		4,132
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	97	112		162
Interest Income Recognized	97	112		162
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	31,848	31,848		38,329
Recorded Investment, With allowance recorded	171,051	171,051		204,621
Recorded Investment	202,899	202,899		242,950
Unpaid Principal Balance, With no related allowance recorded	43,675	43,675		54,938
Unpaid Principal Balance, With allowance recorded	171,373	171,373		215,247
Unpaid Principal Balance	215,048	215,048		270,185
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	19,053	19,053		20,027
Related Allowance	19,053	19,053		20,027
Average Recorded Investment, With no related allowance recorded	31,517	34,048		37,911
Average Recorded Investment, With allowance recorded	182,666	190,729		236,560
Average Recorded Investment	214,183	224,777		274,471
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	1,270	2,773		7,286
Interest Income Recognized	1,270	2,773		7,286
Retail [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	2,310	2,310		1,180
Recorded Investment, With allowance recorded	48,871	48,871		53,782
Recorded Investment	51,181	51,181		54,962
Unpaid Principal Balance, With no related allowance recorded	2,527	2,527		2,840
Unpaid Principal Balance, With allowance recorded	48,871	48,871		53,782
Unpaid Principal Balance	51,398	51,398		56,622
Related Allowance, With no related allowance recorded	0	0		0
Related Allowance, With allowance recorded	961	961		1,192
Related Allowance	961	961		1,192
Average Recorded Investment, With no related allowance recorded	1,889	1,271		1,524
Average Recorded Investment, With allowance recorded	48,557	48,992		58,897
Average Recorded Investment	50,446	50,263		60,421
Interest Income Recognized, With no related allowance recorded	0	0		0
Interest Income Recognized, With allowance recorded	588	714		2,371
Interest Income Recognized	$ 588	$ 714		$ 2,371