Income Taxes (Schedule Of Provision (Benefit) For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 0	$ 0
State	30	31
Foreign	(37)	350
Total current	(7)	381
Deferred:
Federal	338	427
State	1	0
Foreign	54	(56)
Total deferred	393	371
Total provision (benefit) for income taxes	$ 386	$ 752