Segment Information (Schedule Of Operating Results By Segment) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) segments	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segments	1
Net interest income	$ 92,198	$ 77,686
Provision for (recovery of) credit losses	183	(4,605)
Other income and security gains	24,387	31,656
Total other expense	76,503	67,373
Income (loss) before income taxes	39,899	46,574
Income Tax Expense (Benefit)	6,166	7,699
Net Income	33,733	38,875
Assets	9,856,981	9,576,352	$ 9,854,993
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	93,589	79,372
Provision for (recovery of) credit losses	915	(4,547)
Other income and security gains	24,262	31,247
Total other expense	72,997	64,216
Income (loss) before income taxes	43,939	50,950
Income Tax Expense (Benefit)	7,670	9,482
Net Income	36,269	41,468
Assets	9,817,967	9,544,545
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	(1,391)	(1,686)
Provision for (recovery of) credit losses	(732)	(58)
Other income and security gains	125	409
Total other expense	3,506	3,157
Income (loss) before income taxes	(4,040)	(4,376)
Income Tax Expense (Benefit)	(1,504)	(1,783)
Net Income	(2,536)	(2,593)
Assets	$ 39,014	$ 31,807