Equipment and leasehold improvements consist of the following: (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property plant and equipment,gross	$ 29,115	$ 25,322
Less: Accumulated depreciation and amortization	(21,166)	(20,610)
Property, Plant and Equipment, Net, Total	7,949	4,712
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment,gross	19,899	18,289
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment,gross	1,014	961
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment,gross	110	110
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment,gross	5,140	4,900
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment,gross	$ 2,952	$ 1,062

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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