Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets, Gross [Abstract]
Customer Lists And Rights To Sell	$ 735,760	$ 74,989
Trademarks, Formulations And Product Technology	141,908	33,275
Other Finite-Lived Intangible Assets, Gross	5,780	5,840
Total	883,448	114,104
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	62,500	51,622
Customer Lists And Rights To Sell [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	37,850	29,587
Trademarks Formulations and Product Technology [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	18,943	16,469
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 5,707	$ 5,566