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Note 6 - Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Right of use assets - finance leases $ 12,689,000 $ 12,709,000
Property and equipment, net 23,143,000 23,336,000
Construction in progress 658,000 337,000
Land [Member]    
Property and equipment, gross 1,597,000 1,630,000
Building and Building Improvements [Member]    
Property and equipment, gross 7,519,000 7,742,000
Machinery and Equipment [Member]    
Property and equipment, gross 19,693,000 19,378,000
Computer Equipment [Member]    
Property and equipment, gross 2,599,000 2,408,000
Furniture and Fixtures [Member]    
Property and equipment, gross 710,000 722,000
Vehicles [Member]    
Property and equipment, gross 264,000 265,000
Service Equipment [Member]    
Property and equipment, gross 57,000 57,000
Property and Equipment, Excluding Construction in Progress [Member]    
Property and equipment, gross 45,128 44,911
Less: Accumulated depreciation and amortization (22,643,000) (21,912,000)
Property and equipment, net $ 22,485 $ 22,999