Segment Information (Schedule Of Operating Results By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 segments	Mar. 31, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of Operating Segments	3
Net interest income	$ 55,453	$ 61,728
Provision for loan losses	329	8,338
Other income and security gains	18,805	17,453
Gain (Loss) on Sale of Business	0	22,167
Other expense	46,098	48,470
Income (loss) before income taxes	27,831	44,540
Income Tax Expense (Benefit)	7,121	13,065
Net income	20,710	31,475
Assets	6,747,155	6,776,851	6,642,803
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	52,735	55,846
Provision for loan losses	3,130	4,672
Other income and security gains	17,872	16,661
Other expense	40,324	38,056
Income (loss) before income taxes	27,153	29,779
Income Tax Expense (Benefit)	7,213	8,218
Net income	19,940	21,561
Assets	6,611,802	6,587,773
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	2,133	2,211
Provision for loan losses	210	250
Other income and security gains	2
Other expense	786	721
Income (loss) before income taxes	1,139	1,240
Income Tax Expense (Benefit)	399	434
Net income	740	806
Assets	49,555	47,380
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	(655)	2,610
Provision for loan losses	(3,011)	3,416
Other income and security gains	831	724
Gain (Loss) on Sale of Business		22,167
Other expense	3,344	8,165
Income (loss) before income taxes	(157)	13,920
Income Tax Expense (Benefit)	(55)	4,861
Net income	(102)	9,059
Assets	89,240	161,493
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	1,240	1,061
Provision for loan losses
Other income and security gains	100	68
Other expense	1,644	1,528
Income (loss) before income taxes	(304)	(399)
Income Tax Expense (Benefit)	(436)	(448)
Net income	132	49
Assets	$ (3,442)	$ (19,795)