Comprehensive Income (Loss) (Schedule Of Accumulated Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			$ 36,058	$ (1,271)
Other comprehensive income before reclassifications			315	(282)
Amounts reclassified from accumulated other comprehensive loss			36	306
Other comprehensive income (loss), net of tax	$ (63)	$ 437	351	24
Ending Balance	41,523	(1,247)	41,523	(1,247)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(1,545)	(920)
Other comprehensive income before reclassifications			194	(171)
Amounts reclassified from accumulated other comprehensive loss			0	0
Other comprehensive income (loss), net of tax			194	(171)
Ending Balance	(1,351)	(1,091)	(1,351)	(1,091)
Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(17)	61
Other comprehensive income before reclassifications			68	(6)
Amounts reclassified from accumulated other comprehensive loss			0	0
Other comprehensive income (loss), net of tax			68	(6)
Ending Balance	51	55	51	55
Foreign Exchange Forward Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(147)	(412)
Other comprehensive income before reclassifications			53	(105)
Amounts reclassified from accumulated other comprehensive loss			36	306
Other comprehensive income (loss), net of tax			89	201
Ending Balance	(58)	$ (211)	(58)	$ (211)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(1,709)
Ending Balance	$ (1,358)		$ (1,358)