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Note 6 - Contract Assets and Liabilities 1 (Details Textual) - USD ($)
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Mar. 31, 2020
Contract with Customer, Receivable, after Allowance for Credit Loss $ 800,000   $ 400,000  
Club Membership [Member]        
Contract with Customer, Liability, Revenue Recognized 400,000 $ 400,000    
License [Member]        
Contract with Customer, Liability, Revenue Recognized $ 66,666 $ 66,666    
Contract with Customer, Liability, Noncurrent       $ 2,000,000