Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Finite Lived Intangible Assets Gross [Abstract]
Finite Lived Customer Lists, Gross	$ 858,025		$ 858,025		$ 839,551
Other Finite Lived Intangible Assets, Gross	6,390		6,390		6,372
Amortization	15,000	$ 13,700	29,800	$ 27,700
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	168,724		168,724		136,113
Total	1,032,419		1,032,419		1,012,371
Customer lists and rights to sell [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	127,883		127,883		99,806
Trademarks Formulations And Product Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	34,932		34,932		30,483
Total	168,004		168,004		166,448
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	$ 5,909		$ 5,909		$ 5,824