Foreign Currency Forward Exchange Contracts - Fair Value and Presentation in Consolidated Balance Sheets for Derivatives (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative assets	$ 483	$ 142
Derivative liabilities	19	1,234
Foreign Exchange Contracts | Other current assets | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative assets	483	142
Foreign Exchange Contracts | Accrued liabilities | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative liabilities	$ 19	$ 1,234