Comprehensive Income (Loss) (The Effect Of The Reclassifications From Comprehensive Income (Loss) To Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenues	$ (10,486)	$ (5,685)	$ (21,656)	$ (10,669)
Research and development expenses	(2,110)	(1,913)	(4,140)	(3,902)
Selling, general and administrative expenses	(4,031)	(3,295)	(7,537)	(6,676)
Income (loss) before income taxes	2,085	(741)	4,391	(1,502)
Income tax provision (benefit)	44	20	87	40
Net income (loss)	2,041	(761)	4,304	(1,542)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Foreign Exchange Forward Contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenues	(2)	(75)	(27)	(187)
Research and development expenses	(2)	(26)	(6)	(61)
Selling, general and administrative expenses	(1)	(23)	(3)	(58)
Income (loss) before income taxes	(5)	(124)	(36)	(306)
Income tax provision (benefit)	0	0	0	0
Net income (loss)	$ (5)	$ (124)	$ (36)	$ (306)