Quarterly report [Sections 13 or 15(d)]

Note 10 - Share-based Compensation (Details Textual)

v3.25.4
Note 10 - Share-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended
Oct. 31, 2016
Dec. 31, 2025
Dec. 31, 2024
Jun. 30, 2022
Mar. 31, 2018
Jul. 31, 2017
Share-Based Payment Arrangement, Expense   $ 757,605 $ 2,674,105      
Share Price (in dollars per share)   $ 2.14        
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   $ 44,000 $ 300,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 2,400,000        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   2 years 4 months 24 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        
The 2018 Equity Incentive Plan [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   631,591        
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)   16,012        
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