Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Components of Property, Plant and Equipment
Property and equipment	$ 16,046	$ 16,396
Less accumulated depreciation	(11,227)	(11,100)
Property and equipment, net	4,819	5,296
Land
Components of Property, Plant and Equipment
Property and equipment	886	886
Land improvements
Components of Property, Plant and Equipment
Property and equipment	520	520
Buildings and leasehold improvements
Components of Property, Plant and Equipment
Property and equipment	5,356	5,473
Machinery and equipment
Components of Property, Plant and Equipment
Property and equipment	6,686	6,843
Furniture and fixtures
Components of Property, Plant and Equipment
Property and equipment	545	620
Transportation equipment
Components of Property, Plant and Equipment
Property and equipment	878	878
Computer equipment and software
Components of Property, Plant and Equipment
Property and equipment	$ 1,175	$ 1,176