Income Taxes (Schedule Of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Current: Federal	$ 48	$ 402	$ 521
Current: State	80	246	110
Current: Foreign	2,041	2,009	460
Current: Income tax expense	2,169	2,657	1,091
Deferred: Federal	(850)	(2,188)	(714)
Deferred: State	(131)	(154)	70
Deferred: Foreign	(1,264)	(3,866)	(590)
Deferred: Income tax expense	(2,245)	(6,208)	(1,234)
Income tax (benefit) expense	$ (76)	$ (3,551)	$ (143)