Segment Information (Schedule Of Operating Results By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 segments	Jun. 30, 2011	Dec. 31, 2011 segments
Segment Reporting Information [Line Items]
Number of Operating Segments			3		2
Net interest income	$ 58,680	$ 70,022	$ 120,408	$ 139,335
Provision for loan losses	5,238	12,516	13,576	26,616
Other income and security gains	17,508	30,500	57,128	52,165
Other expense	45,804	47,007	94,274	93,353
Net income	18,886	28,953	50,361	51,149
Assets	6,705,574	7,322,024	6,705,574	7,322,024	6,972,245
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	56,022	60,542	111,868	120,779
Provision for loan losses	3,756	4,975	8,428	9,950
Other income and security gains	17,700	30,403	34,361	53,300
Other expense	37,260	36,315	75,316	72,636
Net income	23,483	34,250	45,044	63,279
Assets	6,535,709	6,565,419	6,535,709	6,565,419
VB [Member]
Segment Reporting Information [Line Items]
Net interest income		7,000		13,755
Provision for loan losses		7,016		15,616
Other income and security gains		1,656		339
Other expense		8,174		15,599
Net income		(4,219)		(11,065)
Assets		743,980		743,980
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	2,305	2,195	4,516	4,220
Provision for loan losses	200	525	450	1,050
Other income and security gains
Other expense	706	639	1,427	1,216
Net income	909	669	1,715	1,269
Assets	48,763	45,912	48,763	45,912
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	(1,125)	(224)	1,485	(224)
Provision for loan losses	1,282		4,698
Other income and security gains	(275)	(1,641)	22,616	(1,641)
Other expense	5,999	32	14,164	32
Net income	(5,640)	(1,233)	3,419	(1,233)
Assets	140,051	38,103	140,051	38,103
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	1,478	509	2,539	805
Provision for loan losses
Other income and security gains	83	82	151	167
Other expense	1,839	1,847	3,367	3,870
Net income	134	(514)	183	(1,101)
Assets	$ (18,949)	$ (71,390)	$ (18,949)	$ (71,390)