Property, Plant and Equipment, net (Details) - Property, plant and equipment - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 2,879,000	$ 2,879,000
Less accumulated depreciation	1,227,000	1,164,000
Net property, plant and equipment	1,652,000	1,715,000
Machinery Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,856,000	2,856,000
Leaseholds and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 23,000	$ 23,000