Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Goodwill and Other Intangible Assets (Schedule of Estimated Amortization Expense Relating to Intangible Assets) (Details)

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Goodwill and Other Intangible Assets (Schedule of Estimated Amortization Expense Relating to Intangible Assets) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]    
Remaining nine months of 2016 $ 43,698  
2017 57,924  
2018 55,707  
2019 42,050  
2020 15,057  
Thereafter 22,987  
Net Book Value 237,423  
Amortization of intangible assets $ 14,700 $ 22,000