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

Redeemable Convertible Preferred Stock - Additional Information (Detail)

v3.21.2
Redeemable Convertible Preferred Stock - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2020
USD ($)
Directors
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Jun. 30, 2021
$ / shares
shares
Dec. 31, 2018
shares
Temporary Equity [Line Items]          
Class of Warrant or Right, Outstanding | shares 135,000,000.0   135,000,000.0    
Common stock, Voting rights     one vote    
Number of Board Members Entitled to elect By Common Stock Holders | Directors 3        
If Series C Holders Right to Elect Two Directors [Member]          
Temporary Equity [Line Items]          
Number of Board Members Entitled to elect By Common Stock Holders | Directors 2        
Warrants To Purchase Series B Redeemable Convertible Preferred Stock [Member]          
Temporary Equity [Line Items]          
Class of Warrant or Right, Outstanding | shares 1,100,000   1,100,000    
Class of warrant or right, Exercise price of warrants or rights $ 0.01   $ 0.01    
Warrants and Rights Outstanding, Maturity Date Dec. 25, 2025   Dec. 25, 2025    
Warrants To Purchase Series C Redeemable Convertible Preferred Stock [Member]          
Temporary Equity [Line Items]          
Class of Warrant or Right, Outstanding | shares 200,000   200,000    
Class of warrant or right, Exercise price of warrants or rights $ 4.79   $ 4.79    
Warrants and Rights Outstanding, Maturity Date Aug. 09, 2022   Aug. 09, 2022    
Warrants To Purchase Series C Redeemable Convertible Preferred Stock [Member] | Two Thousand And Eighteen Omnibus Agreement [Member]          
Temporary Equity [Line Items]          
Class of warrant or right, Warrants subject for conversion | shares 8.3   8.3    
Warrants To Purchase Class A Common Stock [Member]          
Temporary Equity [Line Items]          
Class of warrant or right, Exercise price of warrants or rights $ 0.01   $ 0.01    
Warrant and right outstanding, term 10 years   10 years    
Series A Redeemable Convertible Preferred Stock [Member]          
Temporary Equity [Line Items]          
Temporary Equity, Shares Authorized | shares 8,652,000 8,652,000 8,652,000 8,652,000  
Temporary Equity, Shares Issued | shares 8,652,000 8,652,000 8,652,000 8,652,000  
Temporary Equity Shares Outstanding | shares 8,652,000 8,652,000 8,652,000 8,652,000 8,652,000
Temporary Equity, Par or Stated Value Per Share $ 0.00001 $ 0.00001 $ 0.00001 $ 0.00001  
Number of Board Members Entitled to elect By Each Class of Temporary Stock | Directors 1        
Temporary Equity, Liquidation Preference Per Share $ 0.86686   0.86686    
Temporary Stock Dividend Rate Per Dollar Amount 0.06935        
Series A Redeemable Convertible Preferred Stock [Member] | Conversion of Temporary Equity To Permanent Equity [Member]          
Temporary Equity [Line Items]          
Conversion of Stock Conversion Price Per Share $ 0.092   $ 0.092    
Series B Redeemable Convertible Preferred Stock [Member]          
Temporary Equity [Line Items]          
Temporary Equity, Shares Authorized | shares 20,042,000 20,042,000 20,042,000 20,042,000  
Temporary Equity, Shares Issued | shares 18,987,000 18,987,000 18,987,000 18,987,000  
Temporary Equity Shares Outstanding | shares 18,987,000 18,987,000 18,987,000 18,987,000 18,987,000
Temporary Equity, Par or Stated Value Per Share $ 0.00001 $ 0.00001 $ 0.00001 $ 0.00001  
Number of Board Members Entitled to elect By Each Class of Temporary Stock | Directors 2        
Temporary Equity, Liquidation Preference Per Share $ 1.10602   1.10602    
Temporary Stock Dividend Rate Per Dollar Amount 0.08848        
Series B Redeemable Convertible Preferred Stock [Member] | Conversion of Temporary Equity To Permanent Equity [Member]          
Temporary Equity [Line Items]          
Conversion of Stock Conversion Price Per Share $ 0.096   $ 0.096    
Series B Redeemable Convertible Preferred Stock [Member] | If Series C Holders Holds Right to Elect Director [Member]          
Temporary Equity [Line Items]          
Number of Board Members Entitled to elect By Common Stock Holders | Directors 1        
Series B Redeemable Convertible Preferred Stock [Member] | Series C Holders Voting Right Condition One [Member]          
Temporary Equity [Line Items]          
Minimum Threshold Temporary Class of Stock Shares Holding For Voting Rights | shares 2,900,000   2,900,000    
Series B One Redeemable Convertible Preferred stock [Member]          
Temporary Equity [Line Items]          
Temporary Equity, Shares Authorized | shares 9,508,000 9,508,000 9,508,000 9,508,000  
Temporary Equity, Shares Issued | shares 9,508,000 9,508,000 9,508,000 9,508,000  
Temporary Equity Shares Outstanding | shares 9,508,000 9,508,000 9,508,000 9,508,000 9,508,000
Temporary Equity, Par or Stated Value Per Share $ 0.00001 $ 0.00001 $ 0.00001 $ 0.00001  
Number of Board Members Entitled to elect By Common Stock Holders | Directors 1        
Temporary Equity, Liquidation Preference Per Share $ 2.62931   2.62931    
Temporary Stock Dividend Rate Per Dollar Amount 0.21034        
Series B One Redeemable Convertible Preferred stock [Member] | Conversion of Temporary Equity To Permanent Equity [Member]          
Temporary Equity [Line Items]          
Conversion of Stock Conversion Price Per Share $ 0.229   $ 0.229    
Series C Redeemable Convertible Preferred Stock [Member]          
Temporary Equity [Line Items]          
Temporary Equity, Shares Authorized | shares 48,364,000 48,364,000 48,364,000 48,364,000  
Temporary Equity, Shares Issued | shares 41,908,000 41,908,000 41,908,000 41,908,000  
Temporary Equity Shares Outstanding | shares 41,908,000 39,824,000 41,908,000 41,908,000 17,855,000
Temporary Equity, Par or Stated Value Per Share $ 0.00001 $ 0.00001 $ 0.00001 $ 0.00001  
Percentage of Distribution of Original Issue Price Per share in Case of Windup or Dissolution 100.00%   100.00%    
Temporary Equity, Liquidation Preference Per Share $ 4.7974   $ 4.7974    
Temporary Stock Dividend Rate Per Dollar Amount 0.38379        
Series C Redeemable Convertible Preferred Stock [Member] | Conversion of Temporary Equity To Permanent Equity [Member]          
Temporary Equity [Line Items]          
Conversion of Stock Conversion Price Per Share $ 0.417   $ 0.417    
Series C Redeemable Convertible Preferred Stock [Member] | Series C Holders Voting Right Condition One [Member]          
Temporary Equity [Line Items]          
Number of Board Members Entitled to elect By Each Class of Temporary Stock | Directors 1        
Series C Redeemable Convertible Preferred Stock [Member] | Series C Holders Voting Right Condition Two [Member]          
Temporary Equity [Line Items]          
Number of Board Members Entitled to elect By Each Class of Temporary Stock | Directors 2        
Minimum Threshold Temporary Class of Stock Shares Holding For Voting Rights | shares 4,700,000   4,700,000    
Redeemable Convertible Preferred Stock [Member]          
Temporary Equity [Line Items]          
Percentage of Distribution of Original Issue Price Per share in Case of Windup or Dissolution 100.00%   100.00%    
Dividends Temporary Stock | $ $ 0 $ 0      
Redeemable Convertible Preferred Stock [Member] | Conversion of Temporary Equity To Permanent Equity [Member]          
Temporary Equity [Line Items]          
Temporary Equity, Aggregate Amount of Redemption Requirement | $ $ 75,000,000   $ 75,000,000    
Common Class B [Member]          
Temporary Equity [Line Items]          
Common Class of Stock Liquidation Preference Amount Per Share $ 0.00001   $ 0.00001