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Note 5 - Stock Based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Share-Based Payment Arrangement, Expense   $ 303,000 $ 353,000 $ 1,205,000 $ 1,299,000
Equity Classified Warrants [Member]          
Share-Based Payment Arrangement, Expense   30,000 $ 26,000 88,000 $ 94,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 440,000 $ 440,000   $ 440,000  
The 2024 Stock Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 4,677,666 4,677,666   4,677,666  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 1,441,500        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) $ 0.43        
The 2024 Stock Plan [Member] | Share-Based Payment Arrangement, Option [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) 10 years        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 4 years