Accumulated Other Comprehensive Income (Loss) (Summary Of Changes In Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance				$ (256)
Other comprehensive (loss) income		$ (16,505)	$ 1,540	(39,974)	$ (1,558)
Ending balance		(40,230)		(40,230)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss) income		(16,505)	1,540	(39,974)	(1,558)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized gains and losses on available-for-sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[1]	(23,725)	2,021	(256)	5,119
Other comprehensive income (loss) before reclassification	[1]	(16,505)	1,540	(39,974)	(1,541)
Amount reclassified from accumulated other comprehensive (income) loss	[1]				(17)
Other comprehensive (loss) income	[1]	(16,505)	1,540	(39,974)	(1,558)
Ending balance	[1]	$ (40,230)	$ 3,561	$ (40,230)	$ 3,561

[1] All amounts are net of tax. Amounts in parentheses indicate debits.