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Note 2 - Significant Accounting Policies (Details Textual)
3 Months Ended 9 Months Ended
Sep. 30, 2024
USD ($)
Jun. 30, 2024
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Jul. 16, 2024
USD ($)
May 07, 2024
$ / shares
Jan. 03, 2024
$ / shares
Class of Warrant or Right, Fair Value of Common Stock Warrants per Warrant (in dollars per share) | $ / shares               $ 6.71
Class of Warrant or Right, Redemption Price per Share (in dollars per share) | $ / shares             $ 0.001  
Number of Operating Segments   1            
Proceeds from Insurance Settlement, Operating Activities $ 1,100,000   $ 0 $ 9,900,000 $ 100,000      
Insurance Settlements, Maximum Recovery Limit 10,000,000              
Former Senior Vice President [Member]                
Consulting Agreement, Term           1    
Consulting Service, Price Per Hour           $ 500    
Related Party Transaction, Amounts of Transaction $ 29,000              
Former Senior Officer [Member]                
Severance Costs       $ 1,700,000        
Number of Former Employees       2        
Building [Member]                
Property, Plant and Equipment, Useful Life (Year) 39 years     39 years        
Building Improvements [Member]                
Property, Plant and Equipment, Useful Life (Year) 10 years     10 years        
Share-Based Payment Arrangement, Option [Member] | Minimum [Member]                
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 2 years              
Share-Based Payment Arrangement, Option [Member] | Maximum [Member]                
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 4 years