v3.26.1
Details of Certain Financial Statement Components - Property, plant and equipment, net (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Property, plant and equipment, net    
Property, plant and equipment, gross $ 2,770,000 $ 2,472,000
Less: accumulated depreciation (2,296,000) (2,061,000)
Total property, plant and equipment, net 474,000 411,000
Depreciation expense 191,000 140,000
Furniture, machinery and equipment    
Property, plant and equipment, net    
Property, plant and equipment, gross 2,243,000 1,972,000
Leasehold improvements    
Property, plant and equipment, net    
Property, plant and equipment, gross $ 527,000 $ 500,000