Segment Information (Schedule Of Operating Results By Segment) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segments	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segments			3
Net interest income	$ 56,515,000	$ 56,561,000	$ 112,050,000	$ 111,041,000
Provision for (recovery of) loan losses	1,612,000	(1,260,000)	3,244,000	(3,485,000)
Other income and security gains	19,191,000	19,671,000	38,064,000	36,319,000
Total other expense	44,667,000	46,241,000	90,387,000	92,020,000
Income (loss) before income taxes	29,427,000	31,251,000	56,483,000	58,825,000
Income Tax Expense (Benefit)	8,388,000	9,441,000	16,400,000	17,438,000
Net Income	21,039,000	21,810,000	40,083,000	41,387,000
Assets	7,309,569,000	6,787,190,000	7,309,569,000	6,787,190,000	$ 7,001,199,000
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	54,766,000	55,290,000	108,587,000	108,389,000
Provision for (recovery of) loan losses	2,720,000	1,683,000	4,742,000	1,543,000
Other income and security gains	18,720,000	18,909,000	36,732,000	34,612,000
Total other expense	39,586,000	40,024,000	81,518,000	80,416,000
Income (loss) before income taxes	31,180,000	32,492,000	59,059,000	61,042,000
Income Tax Expense (Benefit)	9,847,000	10,320,000	18,567,000	19,305,000
Net Income	21,333,000	22,172,000	40,492,000	41,737,000
Assets	7,223,801,000	6,683,866,000	7,223,801,000	6,683,866,000
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	1,679,000	1,863,000	3,371,000	3,841,000
Provision for (recovery of) loan losses	309,000	315,000	804,000	589,000
Other income and security gains	(1,000)		1,000	1,000
Total other expense	759,000	812,000	1,538,000	1,587,000
Income (loss) before income taxes	610,000	736,000	1,030,000	1,666,000
Income Tax Expense (Benefit)	203,000	258,000	342,000	584,000
Net Income	407,000	478,000	688,000	1,082,000
Assets	37,124,000	42,569,000	37,124,000	42,569,000
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	(14,000)	(98,000)	(102,000)	(293,000)
Provision for (recovery of) loan losses	(1,417,000)	(3,258,000)	(2,302,000)	(5,617,000)
Other income and security gains	327,000	876,000	1,087,000	1,713,000
Total other expense	2,385,000	3,413,000	3,483,000	5,934,000
Income (loss) before income taxes	(655,000)	623,000	(196,000)	1,103,000
Income Tax Expense (Benefit)	(229,000)	218,000	(68,000)	386,000
Net Income	(426,000)	405,000	(128,000)	717,000
Assets	38,873,000	57,890,000	38,873,000	57,890,000
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	84,000	(494,000)	194,000	(896,000)
Other income and security gains	145,000	(114,000)	244,000	(7,000)
Total other expense	1,937,000	1,992,000	3,848,000	4,083,000
Income (loss) before income taxes	(1,708,000)	(2,600,000)	(3,410,000)	(4,986,000)
Income Tax Expense (Benefit)	(1,433,000)	(1,355,000)	(2,441,000)	(2,837,000)
Net Income	(275,000)	(1,245,000)	(969,000)	(2,149,000)
Assets	$ 9,771,000	$ 2,865,000	$ 9,771,000	$ 2,865,000