Summary of Significant Accounting Policies - PP&E, ARO and Other (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment
Construction in progress	$ 12,556	$ 6,308
Interest costs capitalized	0	0
Capitalized cost in accounts payable and accrued expenses	1,369	380
Impairment of long-lived assets		1,550	$ 930
Asset Retirement Obligations
ARO included in other liabilities and accrued expenses	1,553	1,520
Amount of assets associated with AROs not fully depreciated	720
Amount spent on AROs	58	52
Accretion expense recognized on AROs	92	90	86
Accrued Expenses
Personnel related expenses	2,344	2,340
Income taxes		990
Other taxes	1,374	985
Other	1,138	1,494
Total accrued expenses	4,856	5,809
Environmental Expenditures
Capital expenditures related to environmental matters	665	$ 730	$ 1,156
Minimum
Asset Retirement Obligations
Estimated annual expenditures in years 2018 through 2022 relating to AROs	100
Maximum
Asset Retirement Obligations
Estimated annual expenditures in years 2018 through 2022 relating to AROs	$ 200
Buildings and building improvements | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	3 years
Buildings and building improvements | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	25 years
Machinery and equipment | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	2 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	30 years
Furniture and fixtures | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	10 years
Automotive equipment. | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	3 years
Automotive equipment. | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	10 years