Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Shareholders' Equity - Shares Reserved (Details)

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Note 10 - Shareholders' Equity - Shares Reserved (Details)
Mar. 31, 2021
shares
Common shares issuable upon exercise of employee and non-employee stock options (in shares) 3,726,911
Stock Options Outstanding [Member]  
Common shares issuable upon exercise of employee and non-employee stock options (in shares) 2,159,413
Deferred Share Units [Member]  
Common shares issuable upon exercise of employee and non-employee stock options (in shares) 134,402
Common Share Purchase Warrants [Member]  
Common shares issuable upon exercise of employee and non-employee stock options (in shares) 265,000
The 2019 Omnibus Incentive Plan [Member]  
Common shares issuable upon exercise of employee and non-employee stock options (in shares) 493,096
The 2021 Employment Inducement Incentive Plan [Member]  
Common shares issuable upon exercise of employee and non-employee stock options (in shares) 675,000