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Note 6 - Net Loss Per Share (Details Textual) - shares
Dec. 31, 2024
Dec. 31, 2023
Jun. 30, 2023
NET LOSS PER SHARE      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) 100,000 100,000  
Class of Warrant or Right, Outstanding (in shares) 726,375   401,000