Comprehensive Income (Loss) (The Effect Of The Reclassifications From Comprehensive Income (Loss) To Earnings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest income and other	$ 75	$ (107)	$ 2	$ (184)
Cost of revenues	(6,361)	(4,720)	(19,024)	(13,737)
Research and development expenses	(2,266)	(1,978)	(6,669)	(5,835)
Selling, general and administrative expenses	(3,527)	(2,989)	(10,536)	(9,340)
Loss before income taxes	(439)	(1,068)	(1,509)	(4,340)
Income tax provision (benefit)	9	(294)	63	(220)
Net income (loss)	(448)	(774)	(1,572)	(4,120)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) On Foreign Exchange Forward Contracts [Member]
Cost of revenues	3	(41)	(15)	(2)
Research and development expenses	0	(17)	(7)	(12)
Selling, general and administrative expenses	0	(13)	(7)	(10)
Loss before income taxes	3	(71)	(29)	(24)
Income tax provision (benefit)	0	0	0	0
Net income (loss)	3	(71)	(29)	(24)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Losses On Available-for-sale Securities [Member]
Interest income and other	0	0	0	(21)
Income tax provision (benefit)	0	0	0	0
Net income (loss)	$ 0	$ 0	$ 0	$ (21)