v3.26.1
Note 5 - Stockholders' Equity (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Mar. 25, 2025
Oct. 30, 2024
May 25, 2023
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)       1,500,000   1,500,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)       1,050,000   1,050,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)   200,000       0 450
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)   $ 0.65       $ 0 $ 0.65
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)           (0) 250,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price (in dollars per share)           $ (0) $ 1.1
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Reissued in Period (in shares) 250,000            
Share Based Compensation Arrangement By Share Based Payment Award, Options, Reissued, Weighted Average Exercise Price (in dollars per share) $ 0.65            
Share-Based Payment Arrangement, Expense       $ 7,300 $ 15,000 $ 22,000 $ 59,000
Stock Issued During Period, Shares, Issued for Services (in shares)       5,957 36,829 11,992 36,829
Outside Directors [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) 250,000            
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price (in dollars per share) $ 1.1            
Outside Directors [Member] | Katherine Crothall [Member] | Related Party [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) 50,000            
Chief Financial Officer [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) 100,000            
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price (in dollars per share)     $ 1.1        
Share-Based Payment Arrangement, Option [Member]              
Share-Based Payment Arrangement, Plan Modification, Incremental Cost         $ 11,000    
Vesting Immediately [Member] | Share-Based Payment Arrangement, Option [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage   25.00%          
Vesting Annually [Member] | Share-Based Payment Arrangement, Option [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage   25.00%