Quarterly report [Sections 13 or 15(d)]

Note 10 - Share-based Compensation (Details Textual)

v3.26.1
Note 10 - Share-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Oct. 31, 2016
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2026
Mar. 31, 2025
Mar. 12, 2026
Jun. 30, 2022
Jul. 31, 2017
Share-Based Payment Arrangement, Expense   $ 402,712 $ 2,223,843   $ 1,160,317 $ 4,897,948      
Share Price (in dollars per share)   $ 2.21     $ 2.21        
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   $ 0 $ 100,000            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 1,900,000     $ 1,900,000        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   2 years 1 month 6 days              
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)   3,914,259     3,914,259        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)             5,850,000    
The 2017 Equity Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   21,512     21,512        
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