Comprehensive Income (Loss) (The Effect Of The Reclassifications From Comprehensive Income (Loss) To Earnings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Interest income and other	$ 27		$ (76)		$ (77)		$ (41)
Cost of revenues	5,243		7,474		9,017		13,519
Research and development expenses	2,021		2,062		3,857		3,979
Selling, general and administrative expenses	3,224		3,369		6,351		6,595
Income (loss) before income taxes	(1,144)		22		(3,272)		149
Income tax benefit	(56)		121		(74)		86
Net income (loss)	(1,200)		143		(3,346)		235
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) On Foreign Exchange Forward Contracts [Member]
Cost of revenues	14	[1]	(69)	[1]	39	[1]	(120)	[1]
Research and development expenses			(15)	[1]	5	[1]	(29)	[1]
Selling, general and administrative expenses			(11)	[1]	3	[1]	(21)	[1]
Income (loss) before income taxes	14	[1]	(95)	[1]	47	[1]	(170)	[1]
Income tax benefit			32	[1]			58	[1]
Net income (loss)	14	[1]	(63)	[1]	47	[1]	(112)	[1]
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Losses On Available-for-sale Securities [Member]
Interest income and other	2	[1]	4	[1]	(21)	[1]	4	[1]
Net income (loss)	$ 2	[1]	$ 4	[1]	$ (21)	[1]	$ 4	[1]

[1] Amounts in parentheses indicate debits to profit/loss.