v3.25.4
Inventories (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Inventory Disclosure [Abstract]    
Raw materials and manufacturing supplies $ 6,423,000 $ 6,113,000
Finished products 1,808,000 2,009,000
Total inventories 8,231,000 8,122,000
Inventory valuation reserves $ 0 $ 0