Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation (Details Textual)

v3.20.1
Note 12 - Share-based Compensation (Details Textual) - shares
 1 Months Ended 3 Months Ended
Mar. 30, 2019
Mar. 31, 2020
Common Stock, Capital Shares Reserved for Future Issuance (in shares)   2,821,192
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)   636,300
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) 3 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  
Stock Option Prior Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   545,009
The 2012 DSU Plan [Member]    
Common Stock, Capital Shares Reserved for Future Issuance (in shares)   21,183
The 2019 Omnibus Incentive Plan, Stock Option Prior Plan, and the 2012 DSU Plan [Member]    
Common Stock, Capital Shares Reserved for Future Issuance (in shares)   1,202,492