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Note 4 - Property, Plant and Equipment, Net (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Depreciation, Depletion and Amortization $ 1,778 $ 1,692
Machinery and Equipment [Member]    
Property, Plant, and Equipment, Salvage Value $ 0 $ 8