Segment Information (Schedule Of Operating Results By Segment) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) segments	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segments			3
Net interest income	$ 57,715,000	$ 56,709,000	$ 169,765,000	$ 167,750,000
Provision for (recovery of) loan losses	2,404,000	4,501,000	5,648,000	1,016,000
Other income and security gains	20,191,000	19,396,000	58,255,000	55,715,000
Total other expense	47,429,000	44,972,000	137,816,000	136,992,000
Income (loss) before income taxes	28,073,000	26,632,000	84,556,000	85,457,000
Income Tax Expense (Benefit)	8,033,000	8,363,000	24,433,000	25,801,000
Net Income	20,040,000	18,269,000	60,123,000	59,656,000
Assets	7,300,340,000	7,011,255,000	7,300,340,000	7,011,255,000	$ 7,001,199,000
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	55,972,000	55,400,000	164,559,000	163,789,000
Provision for (recovery of) loan losses	2,587,000	6,527,000	7,329,000	8,070,000
Other income and security gains	19,699,000	18,415,000	56,431,000	53,027,000
Total other expense	43,144,000	38,992,000	124,662,000	119,408,000
Income (loss) before income taxes	29,940,000	28,296,000	88,999,000	89,338,000
Income Tax Expense (Benefit)	9,233,000	9,093,000	27,800,000	28,398,000
Net Income	20,707,000	19,203,000	61,199,000	60,940,000
Assets	7,216,773,000	6,913,425,000	7,216,773,000	6,913,425,000
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	1,643,000	1,838,000	5,014,000	5,679,000
Provision for (recovery of) loan losses	282,000	425,000	1,086,000	1,014,000
Other income and security gains	1,000		2,000	1,000
Total other expense	726,000	774,000	2,264,000	2,361,000
Income (loss) before income taxes	636,000	639,000	1,666,000	2,305,000
Income Tax Expense (Benefit)	242,000	223,000	584,000	807,000
Net Income	394,000	416,000	1,082,000	1,498,000
Assets	36,517,000	41,104,000	36,517,000	41,104,000
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	65,000	32,000	(37,000)	(261,000)
Provision for (recovery of) loan losses	(465,000)	(2,451,000)	(2,767,000)	(8,068,000)
Other income and security gains	347,000	892,000	1,434,000	2,605,000
Total other expense	1,456,000	3,332,000	4,939,000	9,266,000
Income (loss) before income taxes	(579,000)	43,000	(775,000)	1,146,000
Income Tax Expense (Benefit)	(203,000)	15,000	(271,000)	401,000
Net Income	(376,000)	28,000	(504,000)	745,000
Assets	37,938,000	53,025,000	37,938,000	53,025,000
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	35,000	(561,000)	229,000	(1,457,000)
Other income and security gains	144,000	89,000	388,000	82,000
Total other expense	2,103,000	1,874,000	5,951,000	5,957,000
Income (loss) before income taxes	(1,924,000)	(2,346,000)	(5,334,000)	(7,332,000)
Income Tax Expense (Benefit)	(1,239,000)	(968,000)	(3,680,000)	(3,805,000)
Net Income	(685,000)	(1,378,000)	(1,654,000)	(3,527,000)
Assets	$ 9,112,000	$ 3,701,000	$ 9,112,000	$ 3,701,000