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Note 7 - Notes Payable (Details Textual) - USD ($)
3 Months Ended
Sep. 26, 2024
Oct. 16, 2023
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Aug. 23, 2024
Aug. 22, 2024
Jul. 25, 2024
Jul. 18, 2024
Jul. 01, 2024
Jun. 25, 2024
May 30, 2024
Mr. Jenkins [Member] | Related Party Notes [Member]                        
Debt Instrument, Face Amount     $ 500,000                 $ 500,000
FatBoy Capital [Member] | Related Party Notes [Member] | Notes Payable 1 [Member]                        
Debt Instrument, Face Amount     150,000               $ 150,000  
FatBoy Capital [Member] | Related Party Notes [Member] | Notes Payable 2 [Member]                        
Debt Instrument, Face Amount     250,000             $ 250,000    
FatBoy Capital [Member] | Related Party Notes [Member] | Notes Payable 3 [Member]                        
Debt Instrument, Face Amount     100,000           $ 100,000      
Jenkins Family Charitable Institute [Member] | Related Party Notes [Member]                        
Debt Instrument, Face Amount     500,000         $ 500,000        
Related Party [Member]                        
Notes Payable, Current     1,500,000   $ 0              
Related Party [Member] | Related Party Notes [Member]                        
Debt Instrument, Interest Rate, Stated Percentage           12.00% 8.00%          
Interest Expense, Debt     45,000 $ 0                
Interest Payable     106,000     $ 21,000            
Notes Payable     1,600,000 0                
Long-Term Debt, Gross         1,500,000              
Short-term Financing Arrangement With Insurance Carrier [Member]                        
Debt Instrument, Face Amount   $ 290,000                    
Debt Instrument, Term (Year)   8 months                    
Debt Instrument, Interest Rate, Stated Percentage   8.99%                    
Interest Expense, Debt     0 $ 3,000                
Notes Payable, Current     0   0              
Short-term Financing Arrangement With Insurance Carrier 2 [Member]                        
Debt Instrument, Face Amount $ 249,000                      
Debt Instrument, Term (Year) 10 months                      
Debt Instrument, Interest Rate, Stated Percentage 9.99%                      
Interest Expense, Debt     4,000                  
Notes Payable, Current     $ 102,000   $ 177,000              
Directors and Officers Liability Insurance [Member]                        
Malpractice Insurance, Coverage Floor $ 293,000 $ 447,000                    
Payments for Malpractice Insurance $ 44,000 $ 157,000