Derivative Financial Instruments - Derivative Instruments at Gross Fair Value Reflected in Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Foreign exchange contracts, Assets	$ 1,531	$ 1,431
Foreign exchange contracts, Liabilities	(1,316)	(1,298)
Fair Value of Derivatives Designated as Hedge Instruments
Derivatives, Fair Value [Line Items]
Foreign exchange contracts, Assets	1,207	1,390
Foreign exchange contracts, Liabilities	(1,292)	(1,250)
Fair Value of Derivatives Not Designated as Hedge Instruments
Derivatives, Fair Value [Line Items]
Foreign exchange contracts, Assets	324	41
Foreign exchange contracts, Liabilities	$ (24)	$ (48)