Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation (Details Textual)

v3.22.1
Note 12 - Share-based Compensation (Details Textual) - shares
 1 Months Ended 3 Months Ended
Mar. 30, 2019
Mar. 31, 2022
Dec. 03, 2021
Mar. 31, 2021
Common Stock, Capital Shares Reserved for Future Issuance (in shares)       3,726,911
The 2019 Omnibus Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) 2,000,000      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)   1,366,503    
Common Stock, Capital Shares Reserved for Future Issuance (in shares)   117,069    
The 2019 Omnibus Incentive Plan [Member] | Employee and Non-employee Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) 10 years      
The 2019 Omnibus Incentive Plan [Member] | Employee and Non-employee Stock Options [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 1 year      
The 2019 Omnibus Incentive Plan [Member] | Employee and Non-employee Stock Options [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 4 years      
The 2019 Omnibus Incentive Plan [Member] | Nonemployee Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) 5 years      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 1 year      
The 2021 Employment Inducement Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)     1,000,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)   325,000    
Stock Option Prior Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)   467,910    
The 2012 DSU Plan [Member]        
Common Stock, Capital Shares Reserved for Future Issuance (in shares)   17,333