v3.26.1
Property, Plant and Equipment (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment, gross $ 17,897,000 $ 16,907,000  
Total accumulated depreciation (14,127,000) (13,706,000)  
Total property, plant and equipment, net 3,770,000 3,201,000  
Depreciation charge for the year 703,000 630,000 $ 569,000
Impairment charge 472,318 0  
Machinery and equipment      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment, gross 14,554,000 13,769,000  
Total accumulated depreciation (11,284,000) (10,733,000)  
Buildings and leasehold improvements      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment, gross 224,000    
Total accumulated depreciation (13,000)    
Office equipment and furniture      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment, gross 2,421,000 2,321,000  
Total accumulated depreciation (2,334,000) (2,320,000)  
Computer equipment and licences      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment, gross 698,000 817,000  
Total accumulated depreciation $ (496,000) $ (653,000)