Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Gross [Abstract]
Customer Lists And Rights To Sell	$ 781,188	$ 792,362
Trademarks, Formulations And Product Technology	155,924	157,049
Other Finite-Lived Intangible Assets, Gross	6,266	6,261
Total	943,378	955,672
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	103,962	77,007
Customer Lists And Rights To Sell [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	72,803	49,932
Trademarks Formulations and Product Technology [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	25,475	21,299
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 5,684	$ 5,776