Intangible Assets (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Gross [Abstract]
Customer Lists And Rights To Sell	$ 796,163,000	$ 792,362,000
Trademarks, Formulations And Product Technology	156,837,000	157,049,000
Other Finite-Lived Intangible Assets, Gross	6,288,000	6,261,000
Total	959,288,000	955,672,000
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	119,348,000	77,007,000
Customer Lists And Rights To Sell [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	85,751,000	49,932,000
Trademarks Formulations and Product Technology [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	27,872,000	21,299,000
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 5,725,000	$ 5,776,000