Property, Plant and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment
Depreciation and amortization expense	$ 260,000	$ 241,000	$ 517,000	$ 485,000
Amortization expense	7,000	$ 8,000	12,000	$ 12,000
Property, plant and equipment, Gross	23,770,000		23,770,000		$ 23,366,000
Machinery and equipment
Property, Plant and Equipment
ROU assets	172,000		172,000		185,000
Property, plant and equipment, Gross	15,216,000		15,216,000		14,526,000
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, Gross	217,000		217,000		$ 1,002,000
Construction In Progress Machinery And Equipment [Member]
Property, Plant and Equipment
Property, plant and equipment, Gross	135,000		135,000
Construction InProgress Building Improvement [Member]
Property, Plant and Equipment
Property, plant and equipment, Gross	$ 82,000		$ 82,000