Annual report pursuant to Section 13 and 15(d)

Merger, Former Rexahn Warrants and Stock Options (Details)

v3.22.1
Merger, Former Rexahn Warrants and Stock Options (Details) - Rexahn [Member] - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Nov. 05, 2020
Former Rexahn Warrants and Stock Options [Abstract]      
Number of warrants outstanding (in shares) 66,538   231,433
Average remaining contractual life 1 year 10 months 24 days    
Number of shares outstanding (in shares) 82 123 993
Minimum [Member]      
Former Rexahn Warrants and Stock Options [Abstract]      
Exercise price (in dollars per share) $ 38.40    
Maximum [Member]      
Former Rexahn Warrants and Stock Options [Abstract]      
Exercise price (in dollars per share) $ 198.00