Goodwill and Intangible Assets 5-Year Amortization (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 30,272
Finite-Lived Intangible Assets, Amortization Expense, Year Two	16,589
Finite-Lived Intangible Assets, Amortization Expense, Year Three	16,286
Finite-Lived Intangible Assets, Amortization Expense, Year Four	16,142
Finite-Lived Intangible Assets, Amortization Expense, Year Five	15,993
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	28,028
Finite-Lived Intangible Assets, Net	$ 123,310	$ 125,186