Quarterly report pursuant to Section 13 or 15(d)

Share-based Compensation, Former Rexahn Options (Details)

v3.21.2
Share-based Compensation, Former Rexahn Options (Details) - Rexahn [Member] - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Former Options [Abstract]      
Number of shares outstanding (in shares) 82 82 123
Exercise price (in dollars per share) $ 182.40 $ 182.40  
Average remaining contractual life 1 year    
Number of options expired (in shares) 41 41