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Fair Value of Financial Instruments Additional Information (Details) - Forward contracts - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]      
Derivative, notional amount $ 707,600   $ 626,500
Other accounts receivable      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Fair value foreign currency forward contracts, asset 388   $ 431
Other expenses, net      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Recognized (losses) gains of foreign currency forward contracts (10,415) $ 4,819  
Other, net      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Change in the fair value of foreign currency forward contracts 10,400 (4,800)  
Cash settlements $ (10,400)    
Cash receipts   $ 100