Investment in Associated Companies - Narrative (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Equity Method Investments	$ 95,785,000	$ 93,822,000
Nippon Quaker (Japan) [Member] | Asia Pacific [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 7,800,000
Kelko (Venezuela) [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage		50.00%
Equity Method Investments		$ 0
Kelko (Venezuela) [Member] | Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 0
Kelko (Panama) [Member] | Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 300,000
Primex (Barbados) [Member] | Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	32.00%
Equity Method Investments	$ 19,400,000
Houghton Korea [Member] | Asia Pacific [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 68,300,000