Annual report pursuant to Section 13 and 15(d)

Company Description and Summary of Significant Accounting Policies, Warrant Liabilities and Premium Conversion Derivatives Measured at Fair Value (Details)

v3.20.4
Company Description and Summary of Significant Accounting Policies, Warrant Liabilities and Premium Conversion Derivatives Measured at Fair Value (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Reclassification of Rexahn warrants from liability to equity $ 64  
Level 3 [Member] | Warrant Liabilities [Member]    
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Balance as of beginning of period 0  
Value assigned to warrants upon in connection with pre-merger financing 25,821  
Issuance of warrants to former Rexahn stockholders classified as a liability 768  
Cash settlement of warrant liabilities (506)  
Reclassification of Rexahn warrants from liability to equity (64)  
Change in fair value of warrant liability 1,945  
Balance as of end of period 27,964 $ 0
Level 3 [Member] | Premium Conversion Derivatives [Member]    
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Balance as of beginning of period 2,714 305
Value assigned to the underlying derivatives in connection with convertible notes 831 1,910
Revaluation due to convertible note extinguishment (3,086) 0
Change in fair value of premium conversion derivatives (459) 499
Balance as of end of period 0 2,714
Nonrecurring Basis [Member]    
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Financial instruments liabilities at fair value $ 0 $ 0