Derivatives (Details 1) € in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Derivatives not designated as hedging instruments | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Notional Amount				$ 49,026	$ 42,866
Fair Value Asset Derivatives	[1]			5	12
Fair Value Liability Derivatives	[1]			520	162
Derivatives not designated as hedging instruments | Foreign currency option contracts
Derivatives, Fair Value [Line Items]
Notional Amount			€ 180,000	193,500	0
Fair Value Asset Derivatives	[1]			0	0
Fair Value Liability Derivatives	[1]			1,132	0
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative, Term of Contract		1 year
Cash Flow Hedge Loss to be Reclassified within Twelve Months		$ 209
Derivatives designated as hedging instruments | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Notional Amount				2,925	2,127
Fair Value Asset Derivatives	[1]			0	0
Fair Value Liability Derivatives	[1]			9	13
Derivatives designated as hedging instruments | Foreign currency option contracts
Derivatives, Fair Value [Line Items]
Notional Amount				8,220	8,522
Fair Value Asset Derivatives	[1]			98	184
Fair Value Liability Derivatives	[1]			$ 0	$ 0

[1] Contracts that mature within the next 12 months are included in Other Current Assets and Other Current Liabilities for asset derivatives and liabilities derivatives, respectively, on our Condensed Consolidated Balance Sheets.