Hedging (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) Derivatives	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Derivatives, Fair Value [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge	2 years
Derivative, Number of New Instruments During Period | Derivatives	12
Derivative, New Instruments During Period, Notional Amount	$ 3,600
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	348	$ (9)
Unrealized loss on hedge instruments	(685)	(634)	$ (819)	$ (752)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(214)	127
Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	348
Hedge Loss Recognized in Other Comprehensive Income (Loss)	134	118
Cost of Sales [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	108	(4)
Research and Development Expense [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	173	(6)
Selling, General and Administrative Expenses [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	67	$ 1
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	0		0
Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	(4)		(277)
Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	(800)
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	$ 13,872		$ 14,024
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative, Number of New Instruments During Period | Derivatives	18
Derivative, New Instruments During Period, Notional Amount	$ 11,600