Accumulated Other Comprehensive Income (Loss) (Summary Of Changes In Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ (256)
Other comprehensive (loss)	$ (20,335)	$ (2,123)	(60,309)	$ (3,681)
Ending balance	(60,565)		(60,565)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive (loss)	(20,335)	(2,123)	(60,309)	(3,681)
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	(40,230)	3,561	(256)	5,119
Other comprehensive income (loss) before reclassification	(20,335)	(2,095)	(60,309)	(3,637)
Amount reclassified from accumulated other comprehensive (income) loss		(28)		(44)
Other comprehensive (loss)	(20,335)	(2,123)	(60,309)	(3,681)
Ending balance	$ (60,565)	$ 1,438	$ (60,565)	$ 1,438