Other Intangible Assets, Net (Finite Lived Intangible Asset Future Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 16,300	$ 14,900	$ 47,800	$ 42,900
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Remainder of 2018	15,963		15,963
2019	62,431		62,431
2020	60,263		60,263
2021	57,557		57,557
2022	55,518		55,518
Thereafter	223,305		223,305
Net	$ 475,037		$ 475,037		$ 475,613