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)

v3.8.0.1
Goodwill and Other Intangible Assets (Schedule of Estimated Amortization Expense Relating to Intangible Assets) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]        
Remaining 3 months of 2017 $ 8,680   $ 8,680  
2018 33,262   33,262  
2019 32,391   32,391  
2020 32,009   32,009  
2021 31,415   31,415  
Thereafter 15,050   15,050  
Net Book Value 152,807   152,807  
Amortization of intangible assets $ 8,800 $ 14,700 $ 26,100 $ 43,900