Other Intangible Assets, Net (Finite Lived Intangible Asset Future Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense for finite-lived intangible assets	$ 15,200	$ 14,000
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Remainder of 2018	41,981
2019	55,646
2020	55,400
2021	52,690
2022	51,020
Thereafter	205,044
Net	$ 461,781		$ 475,613