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Note 5 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($)
Jun. 30, 2024
Dec. 31, 2023
Property, plant and equipment, gross $ 7,379,528 $ 6,914,657
Less – accumulated depreciation and amortization (5,862,258) (5,582,949)
Property, plant and equipment, net 1,517,270 1,331,708
Leasehold Improvements [Member]    
Property, plant and equipment, gross 2,420,028 2,420,028
Computer Equipment [Member]    
Property, plant and equipment, gross 471,122 468,937
Furniture and Fixtures [Member]    
Property, plant and equipment, gross 347,045 347,045
Operating Lease Right of Use Assets [Member]    
Property, plant and equipment, gross $ 4,141,333 $ 3,678,647