Quarterly report pursuant to Section 13 or 15(d)

Warrants - Early Warrant Exercise Transaction (Details)

v3.21.2
Warrants - Early Warrant Exercise Transaction (Details)
 1 Months Ended 9 Months Ended
Jul. 31, 2020
USD ($)
shares
Sep. 30, 2021
USD ($)
$ / shares
shares
Class of Warrant or Right [Line Items]    
Net proceeds $ 2,500,000  
Warrants, exercise price | $ / shares   $ 3.92
Fair value of warrants   $ 3,700,000
Risk-free interest rate    
Class of Warrant or Right [Line Items]    
Warrants, measurement input   0.22
Expected dividend yield    
Class of Warrant or Right [Line Items]    
Warrants, measurement input   0
Expected life    
Class of Warrant or Right [Line Items]    
Warrants, measurement input   5
Expected volatility    
Class of Warrant or Right [Line Items]    
Warrants, measurement input   90
Series A warrant    
Class of Warrant or Right [Line Items]    
Number of common stock shares to be purchased by warrant holders | shares   1,176,137
Warrants, maximum beneficial ownership percentage   9.99%
Series C warrant    
Class of Warrant or Right [Line Items]    
Number of common stock shares to be purchased by warrant holders | shares 705,688  
Warrants, exercise price | $ / shares   $ 8.90