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, 2017
Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
Remaining nine months of 2017 $ 26,030  
2018 33,156  
2019 32,226  
2020 31,899  
2021 31,340  
Thereafter 14,651  
Net Book Value 169,302  
Amortization of intangible assets $ 8,700 $ 14,700