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Note 5 - Balance Sheet Information - Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment, Gross $ 18,366 $ 18,212
Less: accumulated depreciation (14,385) (14,846)
Property, plant and equipment, net 3,981 3,366
Machinery and Equipment [Member]    
Property, Plant and Equipment, Gross 8,154 7,500
Computer Equipment and Software [member]    
Property, Plant and Equipment, Gross 6,493 6,781
Leasehold Improvements [Member]    
Property, Plant and Equipment, Gross 2,417 2,507
Furniture and Fixtures [Member]    
Property, Plant and Equipment, Gross 1,244 1,386
Automobiles [Member]    
Property, Plant and Equipment, Gross $ 58 $ 38