Quarterly report [Sections 13 or 15(d)]

Note 10 - Share-based Compensation (Details Textual)

v3.25.2
Note 10 - Share-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2016
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2022
Mar. 31, 2018
Jul. 31, 2017
Share-Based Payment Arrangement, Expense   $ 1,669,428   $ 3,376,406 $ 6,567,376 $ 10,417,526      
Share Price (in dollars per share)   $ 5.82     $ 5.82        
Share-Based Payment Arrangement, Option [Member]                  
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)     10 years            
Share-Based Payment Arrangement, Expense   $ 36,000   $ 200,000 $ 500,000 $ 1,500,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 4,100,000     $ 4,100,000        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)         2 years        
Stock Appreciation Rights (SARs) [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) 10 years                
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) $ 9.5                
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)         5,000        
Stock Appreciation Rights (SARs) [Member] | Share-Based Payment Arrangement, Employee [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 5,000                
Stock Appreciation Rights (SARs) [Member] | Share-Based Payment Arrangement, Nonemployee [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 14,000                
The 2022 Employment Inducement Equity Incentive Plan [Member]                  
Common Stock, Capital Shares Reserved for Future Issuance (in shares)             400,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   400,000     400,000        
The 2018 Equity Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   813,539     813,539        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)               2,600,000  
The 2017 Equity Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   10,168     10,168        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)                 470,000
The 2008 Stock Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)                 0