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

SHAREHOLDER'S EQUITY - Common Stock Shares (Details)

v3.21.2
SHAREHOLDER'S EQUITY - Common Stock Shares (Details)
4 Months Ended 6 Months Ended
Dec. 02, 2020
shares
Dec. 31, 2020
Vote
$ / shares
shares
Jun. 30, 2021
USD ($)
Vote
$ / shares
shares
Jun. 30, 2020
shares
Dec. 31, 2019
$ / shares
shares
Dec. 31, 2018
shares
Class of Stock [Line Items]            
Common shares, shares authorized (in shares)   216,000,000 216,000,000   60,000,000  
Common shares, par value (in dollars per share) | $ / shares   $ 0.00001 $ 0.00001   $ 0.00001  
Common shares, shares issued (in shares)   19,637,872 19,686,205   18,064,695  
Common shares, shares outstanding (in shares)   19,637,872 19,686,205   18,064,695  
Redeemable convertible preferred stock, shares oustanding   117,734,383 117,734,383 103,201,832 27,967,896 25,602,868
JAWS Spitfire Acquisition Corporation            
Class of Stock [Line Items]            
Redeemable convertible preferred stock, shares oustanding   28,646,767        
Class A Ordinary Share | JAWS Spitfire Acquisition Corporation            
Class of Stock [Line Items]            
Common shares, shares authorized (in shares)   200,000,000 200,000,000      
Common shares, par value (in dollars per share) | $ / shares   $ 0.0001 $ 0.0001      
Common shares, votes per share | Vote   1 1      
Common shares, shares issued (in shares)   5,853,233 4,510,874      
Common shares, shares outstanding (in shares)   5,853,233 4,510,874      
Redeemable convertible preferred stock, shares oustanding   28,646,767 29,989,126      
Class B Ordinary Share | JAWS Spitfire Acquisition Corporation            
Class of Stock [Line Items]            
Common shares, shares authorized (in shares)   20,000,000 20,000,000      
Common shares, par value (in dollars per share) | $ / shares   $ 0.0001 $ 0.0001      
Common shares, votes per share | $     1      
Common shares, shares issued (in shares)   8,625,000 8,625,000      
Common shares, shares outstanding (in shares) 8,625,000 8,625,000 8,625,000      
Sponsor | Founder Shares | Class B Ordinary Share | JAWS Spitfire Acquisition Corporation            
Class of Stock [Line Items]            
Percentage of issued and outstanding shares after the Initial Public Offering collectively held by initial stockholders 20.00% 20.00% 20.00%