Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Net Loss Per Share - Schedule of Antidilutive Shares Excluded from Computation of Net Loss Per Share (Details)

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Note 11 - Net Loss Per Share - Schedule of Antidilutive Shares Excluded from Computation of Net Loss Per Share (Details) - shares
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Employee and Non-employee Stock Options [Member]    
Antidilutive Securities (in shares) 2,159,413 1,421,094
Warrant [Member]    
Antidilutive Securities (in shares) 265,000 265,000
Common Stock, Deferred Stock Units Settlement [Member]    
Antidilutive Securities (in shares) 134,402 72,142