v3.26.1
Note 8 - Stockholders' Equity (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Feb. 05, 2024
Jun. 06, 2022
May 27, 2022
Apr. 29, 2021
Sep. 15, 2003
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2008
Dec. 31, 2025
Common Stock, Shares Authorized           25,000,000   25,000,000     25,000,000
Common Stock, Shares, Issued (in shares)           3,472,491   3,472,491     2,937,225
Common Stock, Shares, Outstanding (in shares)           3,472,491   3,472,491     2,937,225
Treasury Stock, Common, Shares           745,536   745,536     745,536
Treasury Stock, Shares, Acquired         745,536            
Shares Acquired, Average Cost Per Share         $ 0.7            
Treasury Stock, Value, Acquired, Cost Method         $ 521,875         $ 699  
Treasury Stock, Acquired, Percentage of Outstanding Shares         50.11%            
Preferred Stock, Shares Authorized           5,000,000   5,000,000     5,000,000
Preferred Stock, Shares Issued (in shares)           0   0     0
Share-Based Payment Arrangement, Expense           $ 16,682 $ 16,682 $ 33,001 $ 33,001    
Share-Based Payment Arrangement, Option [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)               3 years      
Chief Financial Officer [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross 50,000                    
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) $ 2                    
Equity Incentive Plan [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross       175,000              
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)       $ 1.99              
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)       3 years              
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)       7 years              
Share Price       $ 2.34              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price       $ 1.99              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term       3 years              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate       0.35%              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate       185.00%              
Equity Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]                      
Share-Based Payment Arrangement, Expense               $ 33,001      
Director [Member]                      
Stock Issued During Period, Shares, New Issues (in shares)   121,212                  
Stock Issued During Period, Value, New Issues   $ 200,000                  
Shares Issued, Price Per Share (in dollars per share)   $ 1.65                  
Conversion of Debt into Common Stock [Member]                      
Debt Conversion, Original Debt, Amount     $ 824,269                
Debt Conversion, Converted Instrument, Shares Issued (in shares)     404,054                
Debt Instrument, Convertible, Conversion Price (in dollars per share)     $ 2.04