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Significant Accounting Policies and Practices (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Goodwill and Other Intangibles
Number of reporting units | segment	4
Impairment of goodwill	$ 0	$ 0	$ 0
Impairment of intangible assets	0	0	0
Debt Issuance Costs
Debt issuance cost	64,000	592,000	3,781,000
Amortization of debt issuance costs	3,152,000	3,367,000	$ 3,422,000
Accumulated amortization of debt issuance costs	$ 29,173,000	$ 26,022,000
Minimum
Deferred Catalyst Costs
Catalyst, useful life (in months)	12 months
Deferred Turnaround Costs
Turnarounds, useful life (in months)	12 months
Maximum
Deferred Catalyst Costs
Catalyst, useful life (in months)	36 months
Deferred Turnaround Costs
Turnarounds, useful life (in months)	36 months

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