Annual report pursuant to Section 13 and 15(d)

Stockholder Equity (Deficit), Pre-Merger Financing (Details)

v3.22.1
Stockholder Equity (Deficit), Pre-Merger Financing (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Feb. 03, 2021
shares
Jun. 29, 2020
USD ($)
shares
Apr. 30, 2021
shares
Dec. 31, 2021
USD ($)
Interest
Director
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Nov. 19, 2020
$ / shares
shares
Nov. 05, 2020
shares
Pre-Merger Financing [Abstract]              
Common stock issued (in shares) | shares       18,845,828 10,882,495    
Fair value change of warrant liability and premium conversion derivatives       $ (33,829) $ (1,486)    
Issuance costs attributed to pre-merger financing       $ 0 1,769    
Rexahn [Member]              
Pre-Merger Financing [Abstract]              
Warrants outstanding (in shares) | shares       66,538     231,433
Rexahn [Member] | Minimum [Member]              
Pre-Merger Financing [Abstract]              
Exercise price (in dollars per share) | $ / shares       $ 38.40      
Securities Purchase Agreement [Member]              
Pre-Merger Financing [Abstract]              
Common stock issued (in shares) | shares   1,249,996       3,749,992 3,749,992
Number of trading days       10 days      
Securities Purchase Agreement [Member] | Private Ocuphire [Member]              
Pre-Merger Financing [Abstract]              
Number of directors | Director       5      
Securities Purchase Agreement [Member] | Rexahn [Member]              
Pre-Merger Financing [Abstract]              
Number of directors | Director       1      
Securities Purchase Agreement [Member] | Investors [Member]              
Pre-Merger Financing [Abstract]              
Total investment   $ 21,150          
Securities Purchase Agreement [Member] | Directors [Member]              
Pre-Merger Financing [Abstract]              
Total investment   $ 300          
Series A Warrants [Member]              
Pre-Merger Financing [Abstract]              
Exercise price (in dollars per share) | $ / shares           $ 4.4795  
Exercisable term       5 years      
Warrant issued (in shares) | shares           5,665,838  
Percentage of reset price       120.00%      
Fair market value of warrants         25,800    
Fair value of warrants exceeded         21,150    
Pre-merger financing         4,700    
Number of interest | Interest       1      
Fair value change of warrant liability and premium conversion derivatives         $ 2,100    
Series A Warrants [Member] | Offset to Additional Capital [Member]              
Pre-Merger Financing [Abstract]              
Issuance costs attributed to pre-merger financing       $ 1,100      
Series A Warrants [Member] | Interest Expense [Member]              
Pre-Merger Financing [Abstract]              
Issuance costs attributed to pre-merger financing       $ 700      
Series A Warrants [Member] | Risk-Free Interest Rate [Member]              
Pre-Merger Financing [Abstract]              
Percentage of measurement input       0.004 0.004    
Series A Warrants [Member] | Expected Volatility [Member]              
Pre-Merger Financing [Abstract]              
Percentage of measurement input       0.866 0.836    
Series A Warrants [Member] | Expected Term [Member]              
Pre-Merger Financing [Abstract]              
Expected life       4 years 9 months 18 days 5 years    
Series A Warrants [Member] | Expected Dividend Yield Rate [Member]              
Pre-Merger Financing [Abstract]              
Percentage of measurement input       0 0    
Series A Warrants [Member] | Waiver Agreements [Member]              
Pre-Merger Financing [Abstract]              
Fair value change of warrant liability and premium conversion derivatives       $ 33,800      
Series B Warrants [Member]              
Pre-Merger Financing [Abstract]              
Exercise price (in dollars per share) | $ / shares       $ 0.0001      
Number of shares issued, warrants exercised (in shares) | shares     1,629,634        
Warrants outstanding (in shares) | shares       78,700      
Warrant issued (in shares) | shares       1,708,334   665,836  
Remaining issuable shares (in shares) | shares       0      
Number of trading days including reset date       45 days      
Period of issuance date       6 months      
Period of after issuance date       1 year      
Pre-money valuation amount       $ 10,000      
Series B Warrants [Member] | Minimum [Member]              
Pre-Merger Financing [Abstract]              
Number of trading days       9 days      
Series B Warrants [Member] | Waiver Agreements [Member]              
Pre-Merger Financing [Abstract]              
Aggregate number of shares (in shares) | shares 1,708,334            
the Warrants [Member]              
Pre-Merger Financing [Abstract]              
Issuance costs attributed to pre-merger financing       $ 1,800      
Placement agent cash fee       1,600      
Legal and other fees       $ 200