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Note 20 - Subsequent Events (Details Textual) - $ / shares
12 Months Ended
Jan. 29, 2025
Jan. 24, 2025
Jan. 13, 2025
Jan. 03, 2025
Jan. 08, 2024
Dec. 31, 2024
Jan. 31, 2025
Oct. 25, 2024
Jul. 15, 2024
Dec. 31, 2023
Common Stock, Shares Authorized (in shares)           30,000,000     30,000,000 30,000,000
Preferred Stock, Shares Authorized (in shares)           10,000,000       10,000,000
Non-plan Options [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)           25,000        
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)           $ 5.32        
Equity Incentive Plan 2023 [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)         28,500          
Common Stock, Capital Shares Reserved for Future Issuance (in shares)           926,882       50,186
Abeyance Shares [Member]                    
Common Stock, Capital Shares Reserved for Future Issuance (in shares)               3,096,000    
Subsequent Event [Member]                    
Stock, Shares Authorized (in shares)     70,000,000              
Common Stock, Shares Authorized (in shares)     60,000,000              
Preferred Stock, Shares Authorized (in shares)     10,000,000              
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 1,627,500                  
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) $ 0.42                  
Subsequent Event [Member] | PeriKard Royalty [Member] | PeriKard, LLC [Member]                    
Royalty Percentage   10.00%                
Subsequent Event [Member] | PeriKard, LLC [Member]                    
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)   275,000                
Business Acquisition, Percentage of Voting Interests Acquired   100.00%                
Subsequent Event [Member] | Restricted Stock [Member]                    
Common Stock, Capital Shares Reserved for Future Issuance (in shares)             100,000      
Subsequent Event [Member] | Mr. Jenkins [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 450,000                  
Subsequent Event [Member] | Chief Operating Officer [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 50,000                  
Subsequent Event [Member] | Chief Commercial Officer [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 250,000                  
Subsequent Event [Member] | Chief Financial Officer [Member] | Non-plan Options [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)       500,000            
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)       $ 0.53            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)       3 years            
Subsequent Event [Member] | Equity Incentive Plan 2023 [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)     1,500,000              
Subsequent Event [Member] | Series K Warrants [Member]                    
Stock Issued During Period, Shares, Warrant Exercises (in shares)     10,695,962              
Subsequent Event [Member] | Abeyance Shares [Member]                    
Stock Issued During Period, Shares, New Issues (in shares)       939,000