Accumulated Other Comprehensive Loss (Summary Of Changes In Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2015			$ (9,320)
Foreign currency translation adjustment	$ 418	$ (60)	891	$ (3,251)
As of September 30, 2016	(8,429)		(8,429)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2015			(9,320)
Foreign currency translation adjustment			891
As of September 30, 2016	$ (8,429)		$ (8,429)