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Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]    
Impact of foreign exchange rates on intangible assets $ 18,000  
Amortization expense of intangible assets $ 112,455 $ 120,055