v3.26.1
Note 5 - Share-based Compensation (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jan. 31, 2026
Mar. 31, 2025
Jan. 31, 2025
Jun. 22, 2018
Sep. 07, 2017
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Stock Issued During Period, Value, Issued for Services           $ 236,000 $ 46,000 $ 212,000 $ 61,000      
Share Price (in dollars per share)           $ 0.11       $ 0.11    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price (in dollars per share) $ 0.18   $ 0.25                  
2024 Equity Incentive Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)                   10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Per Year (in shares)                   2,000,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)           44,000,000       44,000,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)           20,513,196       20,513,196    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                   6,781,011 3,790,347  
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)                   $ 0.13 $ 0.24  
2018 Equity Incentive Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)       10 years                
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)                       9,343,614
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount           $ 225,000       $ 225,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)                   2 years    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)                   (0) 566,951  
Stock Issued During Period, Shares, Cashless Exercise of Options (in shares)                     265,800  
Equity Incentive Plan 2007 [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)         10 years              
Non Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                     32,143  
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)                     $ 0.28  
Share-Based Payment Arrangement, Option [Member]                        
Share-Based Payment Arrangement, Expense           722,000   492,000   $ 1,421,000 $ 1,107,000  
Share-Based Payment Arrangement, Option [Member] | 2024 Equity Incentive Plan [Member]                        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount           827,000       $ 827,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)                   4 years    
Share-Based Payment Arrangement, Option [Member] | Non Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                   0 32,143  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value                   $ 8,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount           29,000       $ 29,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)                   2 years    
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)                     $ 0.28  
Share-Based Payment Arrangement, Option [Member] | Clyra Medical Technologies [Member]                        
Share-Based Payment Arrangement, Expense           $ 250,000   $ 200,000   $ 663,000 $ 406,000  
Officer [Member]                        
Stock Issued During Period, Shares, Issued for Services (in shares)           1,143,753 69,444 350,751 11,250      
Shares Issued, Price Per Share (in dollars per share)   $ 0.28       $ 0.11 $ 0.16 $ 0.21 $ 0.28 $ 0.11 $ 0.21  
Stock Issued During Period, Value, Issued for Services   $ 3,000       $ 130,000 $ 11,000 $ 70,000        
Consultants and Vendors [Member]                        
Stock Issued During Period, Shares, Issued for Services (in shares)           1,137,681 212,963 564,252 209,080      
Shares Issued, Price Per Share (in dollars per share)   $ 0.28       $ 0.11 $ 0.16 $ 0.21 $ 0.28 $ 0.11 $ 0.21  
Stock Issued During Period, Value, Issued for Services           $ 106,000 $ 35,000 $ 143,000 $ 58,000      
Board of Directors, Employees, and Consultants [Member] | 2024 Equity Incentive Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                   6,781,011 3,790,347  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value                   $ 744,000 $ 816,000  
Director [Member] | 2024 Equity Incentive Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                   1,067,569 822,571  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value                   $ 120,000 $ 172,000  
Employees [Member] | Employee Retention Program [Member] | 2024 Equity Incentive Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                   1,872,888 1,159,573  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value                   $ 214,000 $ 249,000  
Consultants [Member] | 2024 Equity Incentive Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                   3,540,554 1,508,203  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value                   $ 364,000 $ 328,000  
Chief Financial Officer [Member] | 2024 Equity Incentive Plan [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                   300,000 300,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value                   $ 46,000 $ 67,000  
Chief Financial Officer [Member] | Share-Based Payment Arrangement, Option [Member]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)     10 years                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 300,000   300,000                  
Engagement Extension, Term (Year) 1 year   1 year                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross, Per Month (in shares) 25,000   25,000