XML 39 R29.htm IDEA: XBRL DOCUMENT v3.25.1
Details of Certain Financial Statement Components - Property, plant and equipment, net (Details) - USD ($)
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Property, plant and equipment, net      
Property, plant and equipment, gross $ 2,691,000   $ 2,472,000
Less: accumulated depreciation (2,115,000)   (2,061,000)
Total property, plant and equipment, net 576,000   411,000
Depreciation expense 47,000 $ 40,000  
Furniture, machinery and equipment      
Property, plant and equipment, net      
Property, plant and equipment, gross 2,175,000   1,972,000
Leasehold improvements      
Property, plant and equipment, net      
Property, plant and equipment, gross $ 516,000   $ 500,000