Annual report pursuant to Section 13 and 15(d)

Net (loss) income per share, Anti-dilutive Securities Excluded from Computation of Net Income (Loss) per Share (Details)

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Net (loss) income per share, Anti-dilutive Securities Excluded from Computation of Net Income (Loss) per Share (Details) - shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Series A, Series B and RDO Warrants [Member]    
Net Income (Loss) Per Share [Abstract]    
Antidilutive securities excluded from computation of net loss per share (in shares) 7,204,299 7,145,201
Stock Options [Member]    
Net Income (Loss) Per Share [Abstract]    
Antidilutive securities excluded from computation of net loss per share (in shares) 4,410,258 2,346,879
RSUs [Member]    
Net Income (Loss) Per Share [Abstract]    
Antidilutive securities excluded from computation of net loss per share (in shares) 801,700 0
Former Rexahn Warrants [Member]    
Net Income (Loss) Per Share [Abstract]    
Antidilutive securities excluded from computation of net loss per share (in shares) 58,597 60,713