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Note 6 - Stock-Based Compensation Expense - 10Q (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Share-Based Payment Arrangement, Expense     $ 528,644 $ 1,074,957
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount $ 2,200,000   $ 515,969  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 2 years 4 months 24 days   1 year 9 months 18 days  
Expense Related To Consulting And Investment Banking Agreements [Member]        
Share-Based Payment Arrangement, Expense $ 0 $ 54,167    
Share-Based Payment Arrangement, Option [Member]        
Share-Based Payment Arrangement, Expense $ 292,744 $ 103,569 $ 474,477 $ 855,124