Stockholders' Deficit Stockholders' (Deficit) Equity (Changes In Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Foreign Currency Translation Adjustmentss Loss, Changes	$ 85	$ (291)
Foreign Currency Translation Adjustment, Balance	(3,366)	(3,451)	$ (3,160)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	455	(704)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(87)	(542)	162
Other Comprehensive Income (Loss), Net of Tax	540	(995)	87
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (3,453)	$ (3,993)	$ (2,998)