Property, Plant and Equipment, net (Details) - Property, plant and equipment - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 2,943,000	$ 2,931,000
Less accumulated depreciation	1,044,000	981,000
Net property, plant and equipment	1,899,000	1,950,000
Machinery Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,920,000	2,908,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 23,000	$ 23,000