Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	$ (1,510)	$ (1,102)
Other comprehensive loss	(995)	(225)
Balance	(2,505)	(1,327)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(1,478)	(1,285)
Other comprehensive loss	(506)	(127)
Balance	(1,984)	(1,412)
Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(32)	183
Other comprehensive loss	(489)	(98)
Balance	$ (521)	$ 85