Segment Information (Schedule Of Operating Results By Segment) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) segments	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segments	3
Net interest income	$ 59,819	$ 55,535
Provision for (recovery of) loan losses	910	1,632
Other income and security gains	17,389	18,873
Total other expense	49,899	45,720
Income (loss) before income taxes	26,399	27,056
Income Tax Expense (Benefit)	7,713	8,012
Net Income	18,686	19,044
Assets	7,428,185	7,303,999	$ 7,311,354
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	57,155	53,821
Provision for (recovery of) loan losses	1,533	2,022
Other income and security gains	17,223	18,012
Total other expense	41,360	41,932
Income (loss) before income taxes	31,485	27,879
Income Tax Expense (Benefit)	9,741	8,720
Net Income	21,744	19,159
Assets	7,347,378	7,212,490
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	1,504	1,692
Provision for (recovery of) loan losses	527	495
Other income and security gains		2
Total other expense	3,798	779
Income (loss) before income taxes	(2,821)	420
Income Tax Expense (Benefit)	(985)	139
Net Income	(1,836)	281
Assets	34,637	38,569
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	1,161	(88)
Provision for (recovery of) loan losses	(1,150)	(885)
Other income and security gains	34	760
Total other expense	1,404	1,098
Income (loss) before income taxes	941	459
Income Tax Expense (Benefit)	329	161
Net Income	612	298
Assets	34,592	43,513
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	(1)	110
Other income and security gains	132	99
Total other expense	3,337	1,911
Income (loss) before income taxes	(3,206)	(1,702)
Income Tax Expense (Benefit)	(1,372)	(1,008)
Net Income	(1,834)	(694)
Assets	$ 11,578	$ 9,427