Segment Information (Schedule Of Operating Results By Segment) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015 segments	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Number of Operating Segments	3
Net interest income	$ 55,535,000	$ 54,480,000
Provision for (recovery of) loan losses	1,632,000	(2,225,000)
Other income and security gains	18,873,000	16,648,000
Total other expense	45,720,000	45,779,000
Income (loss) before income taxes	27,056,000	27,574,000
Income Tax Expense (Benefit)	8,012,000	7,997,000
Net income	19,044,000	19,577,000
Assets	7,303,999,000	6,809,106,000	7,001,199,000
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	53,821,000	53,099,000
Provision for (recovery of) loan losses	2,022,000	(140,000)
Other income and security gains	18,012,000	15,703,000
Total other expense	41,932,000	40,392,000
Income (loss) before income taxes	27,879,000	28,550,000
Income Tax Expense (Benefit)	8,720,000	8,985,000
Net income	19,159,000	19,565,000
Assets	7,212,490,000	6,700,563,000
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	1,692,000	1,978,000
Provision for (recovery of) loan losses	495,000	274,000
Other income and security gains	2,000	1,000
Total other expense	779,000	775,000
Income (loss) before income taxes	420,000	930,000
Income Tax Expense (Benefit)	139,000	326,000
Net income	281,000	604,000
Assets	38,569,000	44,564,000
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	(88,000)	(195,000)
Provision for (recovery of) loan losses	(885,000)	(2,359,000)
Other income and security gains	760,000	837,000
Total other expense	1,098,000	2,521,000
Income (loss) before income taxes	459,000	480,000
Income Tax Expense (Benefit)	161,000	168,000
Net income	298,000	312,000
Assets	43,513,000	62,715,000
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	110,000	(402,000)
Other income and security gains	99,000	107,000
Total other expense	1,911,000	2,091,000
Income (loss) before income taxes	(1,702,000)	(2,386,000)
Income Tax Expense (Benefit)	(1,008,000)	(1,482,000)
Net income	(694,000)	(904,000)
Assets	$ 9,427,000	$ 1,264,000