General form of registration statement for all companies including face-amount certificate companies

STOCKHOLDERS' EQUITY - Common Stock Warrants (Details)

v3.21.2
STOCKHOLDERS' EQUITY - Common Stock Warrants (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
Y
$ / shares
shares
Dec. 09, 2020
Y
$ / shares
Mar. 31, 2020
Y
$ / shares
Dec. 31, 2019
Y
$ / shares
Class of Warrant or Right [Line Items]          
Share price       $ 3.34  
Change in fair value of warrant liability | $ $ 56,576 $ (56,417)      
Common Stock Warrants Converted | shares 756,498        
Shares issued on exercise of warrants | shares 447,938        
Riskfree interest rate          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input       2  
Expected volatility          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input       52.5  
Expected life (in years)          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input | Y       7.8  
Minimum          
Class of Warrant or Right [Line Items]          
Share price   $ 5.13      
Collaboration Agreement          
Class of Warrant or Right [Line Items]          
Share price   $ 3.34     $ 3.34
Common Stock Warrants Converted | shares   756,498      
Shares issued on exercise of warrants | shares   447,938      
Collaboration Agreement | Riskfree interest rate          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input   2.0     2.0
Collaboration Agreement | Expected volatility          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input   52.5     52.5
Collaboration Agreement | Expected life (in years)          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input | Y   8.0      
Collaboration Agreement | Maximum          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input | Y         8.8
Collaboration Agreement | Minimum | Expected life (in years)          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input | Y         8.0
Technical Technical Research and Development Advisor Services          
Class of Warrant or Right [Line Items]          
Share price   $ 7.98      
Common Stock Warrants Converted | shares   366,366      
Shares issued on exercise of warrants | shares   244,428      
Technical Technical Research and Development Advisor Services | Riskfree interest rate          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input   0.5      
Technical Technical Research and Development Advisor Services | Expected volatility          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input   52.5      
Technical Technical Research and Development Advisor Services | Expected life (in years)          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input | Y   0.3      
Private Placement Warrants          
Class of Warrant or Right [Line Items]          
Share price   $ 17.20 $ 24.77    
Change in fair value of warrant liability | $   $ (56,400)      
Private Placement Warrants | Riskfree interest rate          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input   0.4 0.4    
Private Placement Warrants | Expected volatility          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input 0.550 50.0 40.0    
Private Placement Warrants | Expected life (in years)          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input 0.048 4.9 5    
Private Placement Warrants | Maximum          
Class of Warrant or Right [Line Items]          
Share price $ 30.49        
Private Placement Warrants | Maximum | Riskfree interest rate          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input 0.006        
Private Placement Warrants | Minimum          
Class of Warrant or Right [Line Items]          
Share price $ 19.82        
Private Placement Warrants | Minimum | Riskfree interest rate          
Class of Warrant or Right [Line Items]          
Warrants and Rights Outstanding, Measurement Input 0.004