Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives - Effects of Foreign Currency Which Was not Designated As Cash Flow Hedge (Details 9)

v3.5.0.2
Fair Value Measurements and Derivatives - Effects of Foreign Currency Which Was not Designated As Cash Flow Hedge (Details 9) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Not Designated as Hedging Instrument | Foreign Currency Collar | Cash Flow Hedging        
Derivative Instruments Gain Loss [Line Items]        
Gain (loss) recognized in other income (expense) $ 955 $ 10,312 $ (18,648)