Intangibles and Goodwill Schedule of Finite-Lived Intangible Asset Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 4,704
Finite-Lived Intangible Assets, Amortization Expense, Year Two	6,240
Finite-Lived Intangible Assets, Amortization Expense, Year Three	6,209
Finite-Lived Intangible Assets, Amortization Expense, Year Four	6,104
Finite-Lived Intangible Assets, Amortization Expense, Year Five	6,040
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	20,449
Finite-Lived Intangible Assets, Net	$ 49,746	$ 51,319