Derivative Financial Instruments - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Net deferred gain (loss) associated with cash flow hedges	$ 100		$ 100		$ (400)
Gains (losses) related to loss of hedge designation on discontinued cash flow hedges	0	$ 0	0	$ 0
Gain recognized for foreign currency forward contracts	0	$ (300)	(500)	$ 1,700
Cash flow hedges | Fair value of derivatives designated as hedge instruments
Derivatives, Fair Value [Line Items]
Notional principle amounts of Company's derivative instruments	130,100		130,100		117,600
Cash flow hedges | Fair value of derivatives not designated as hedge instruments
Derivatives, Fair Value [Line Items]
Notional principle amounts of Company's derivative instruments	$ 23,200		$ 23,200		$ 25,900