Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Liability, revenue recognized	$ 1,500	$ 4,100	$ 5,600
Disaggregation of Revenue [Line Items]
Contract liabilities	147,383	$ 175,511
Specialty Polymers | Polymer
Revenue from Contract with Customer [Abstract]
Liability, revenue recognized	9,300
Specialty Polymers | Cariflex | Polymer
Disaggregation of Revenue [Line Items]
Additions to contract liabilities	180,600
Other Payables and Accruals
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 26,700