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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ (5,020)
Other comprehensive income (loss)	$ 703	$ (1,456)	6,163	$ (5,825)
Ending balance	1,143		1,143
Unrealized gains (losses) on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	440	(7,036)	(5,020)	(2,667)
Other comprehensive income (loss) before reclassification	835	(1,446)	6,346	(5,657)
Other comprehensive income (loss)	703	(1,456)	6,163	(5,825)
Ending balance	1,143	(8,492)	1,143	(8,492)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	703	(1,456)	6,163	(5,825)
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized gains (losses) on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive loss	$ (132)	$ (10)	$ (183)	$ (168)