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Note 3 - Trade Accounts Receivable (Details Textual) - USD ($)
Sep. 30, 2025
Dec. 31, 2024
Accounts Receivable, after Allowance for Credit Loss, Current $ 2,554,766 $ 3,771,133
Accounts Receivable, Allowance for Credit Loss, Current 0 0
Related Party [Member]    
Accounts Receivable, after Allowance for Credit Loss, Current $ 22,387 $ 52,097