Hedging (Details) (USD $)	3 Months Ended				6 Months Ended									3 Months Ended		6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012 Foreign Exchange Forward [Member]	Dec. 31, 2011 Foreign Exchange Forward [Member]	Dec. 31, 2011 Foreign Exchange Forward [Member] Other Current Assets [Member]	Jun. 30, 2012 Foreign Exchange Forward [Member] Other Accrued Liabilities [Member]	Dec. 31, 2011 Foreign Exchange Forward [Member] Other Accrued Liabilities [Member]	Jun. 30, 2012 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Derivatives	Jun. 30, 2011 Cash Flow Hedging [Member] Foreign Exchange Forward [Member]	Jun. 30, 2012 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Derivatives	Jun. 30, 2011 Cash Flow Hedging [Member] Foreign Exchange Forward [Member] Derivatives
Derivatives, Fair Value [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge					2 years
Derivative, New Instruments During Period, Notional Amount														$ 2,430,000		$ 6,900,000	$ 2,184,000
Derivative, Number of New Instruments During Period														20		41	12
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives									14,649,000	15,480,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value											0
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value												(1,119,000)	(647,000)
Hedge Loss Recognized in Other Comprehensive Income (Loss)	(846,000)	[1]	(55,000)	[1]	(673,000)	[1]	57,000	[1]						(846,000)	(55,000)	(673,000)	57,000
Cash Flow Hedge Gain (Loss) Reclassified to Cost of Sales, Net	76,000		20,000		68,000		35,000
Cash Flow Hedge Gain (Loss) Reclassified To Research and Development	37,000		127,000		46,000		230,000
Cash Flow Hedge Gain (Loss) Reclassified To Selling, General and Administrative	(25,000)		31,000		(16,000)		74,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months									$ (800,000)

[1] (A)For the three months ended June 30, 2012 and 2011, the amounts are net of deferred taxes of $(5) and $10 and for the six months ended June 30, 2012 and 2011 the amounts are net of deferred taxes of $24 and $48.