Annual report [Section 13 and 15(d), not S-K Item 405]

Note 10 - Share-based Compensation (Details Textual)

v3.25.3
Note 10 - Share-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Oct. 31, 2016
Dec. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Jun. 30, 2022
Mar. 31, 2018
Jul. 31, 2017
Share-Based Payment Arrangement, Expense, Tax Benefit     $ 2,000,000 $ 3,100,000      
Share-Based Payment Arrangement, Expense     $ 8,102,177 13,644,405      
Share Price (in dollars per share)     $ 3.8        
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     $ 500,000 $ 1,900,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount     $ 2,500,000        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)     1 year 8 months 12 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 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            
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        
The 2018 Equity Incentive Plan [Member]              
Common Stock, Capital Shares Reserved for Future Issuance (in shares)     847,183,000,000        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)           2,600,000  
The 2017 Equity Incentive Plan [Member]              
Common Stock, Capital Shares Reserved for Future Issuance (in shares)     17,546        
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