Annual report pursuant to Section 13 and 15(d)

Benefit Plans and Collective Bargaining Agreements - DanChem Facility Narrative (Details)

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Benefit Plans and Collective Bargaining Agreements - DanChem Facility Narrative (Details) - DanChem Plan - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Defined Contribution Plan Disclosure [Line Items]    
Employee maximum contribution amount $ 19,500  
Minimum age to qualify under Economic Growth and Tax Relief Reconciliation Act 50 years  
Employee additional contribution eligible under economic growth and tax relief reconciliation act $ 6,500  
Employee maximum contribution eligible under economic growth and tax relief reconciliation act 26,000  
Employer discretionary contribution $ 400,000  
Defined Contribution Plan, Tranche One    
Defined Contribution Plan Disclosure [Line Items]    
Employer maximum contribution percentage match 100.00% 100.00%
Matching percentage by employer of employees' gross pay 3.00% 3.00%
Defined Contribution Plan, Tranche Two    
Defined Contribution Plan Disclosure [Line Items]    
Employer maximum contribution percentage match 50.00% 50.00%
Minimum | Defined Contribution Plan, Tranche Two    
Defined Contribution Plan Disclosure [Line Items]    
Matching percentage by employer of employees' gross pay 3.00% 3.00%
Maximum | Defined Contribution Plan, Tranche Two    
Defined Contribution Plan Disclosure [Line Items]    
Matching percentage by employer of employees' gross pay 6.00% 6.00%