Stockholders' Deficit Stockholders' (Deficit) Equity (Changes In Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Foreign Currency Translation Adjustmentss Loss, Changes	$ 0	$ 0
Foreign Currency Translation Adjustment, Balance	(2,836)	(2,836)	$ (2,836)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	(29)	(135)
AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax	51	80	215
Other Comprehensive Income (Loss), Net of Tax	(29)	(135)	190
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (2,785)	$ (2,756)	$ (2,621)