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Note 4 - Property and Equipment: Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Details    
Land $ 1,593 $ 1,690
Buildings and Improvements, Gross 13,601 14,172
Machinery and Equipment, Gross 17,068 16,660
Construction in Progress, Gross 906 898
Property, Plant and Equipment, Gross 33,168 33,420
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (22,944) (22,802)
Property and equipment, net (notes 4 and 10) $ 10,224 $ 10,618