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

Other (Expense)/Income - Additional Information (Detail)

v3.21.2
Other (Expense)/Income - Additional Information (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Feb. 28, 2021
Jun. 30, 2021
Jun. 30, 2020
Feb. 18, 2021
Feb. 03, 2021
Feb. 02, 2021
Non Operating Expense Income [Line Items]            
Debt issuance costs expensed   $ (47,718) $ 0      
Common Class A [Member]            
Non Operating Expense Income [Line Items]            
Class of warrants or rights number of securities called for by the warrants or rights   43,500,000        
Two Thousand and Twenty One Bridge Notes [Member] | Two Thousand and Twenty One Bridge Financing [Member]            
Non Operating Expense Income [Line Items]            
Debt principal amount         $ 18,100 $ 60,000
Two Thousand and Twenty One Bridge Notes [Member] | Two Thousand and Twenty One Bridge Financing [Member] | SVB Line Of Credit [Member]            
Non Operating Expense Income [Line Items]            
Stock shares issued during the period new issues value   $ 43,900        
Stock issued during the period shares bridge financing   93,000,000.0        
Payment of debt modification costs   $ 3,700        
Two Thousand and Twenty One Bridge Notes [Member] | Debt First Tranche [Member] | Two Thousand and Twenty One Bridge Financing [Member]            
Non Operating Expense Income [Line Items]            
Debt principal amount $ 24,200          
Loss on issuance of debt   (84,291) 0      
Two Thousand and Twenty One Bridge Notes [Member] | Debt First Tranche [Member] | Two Thousand and Twenty One Bridge Financing [Member] | Common Class A [Member]            
Non Operating Expense Income [Line Items]            
Stock shares issued during the period new issues shares 126,600,000          
Stock shares issued during the period new issues value $ 59,800          
Class of warrants or rights number of securities called for by the warrants or rights 42,500,000          
Warrants or rights outstanding $ 18,400          
Two Thousand and Twenty One Bridge Notes [Member] | Debt Second Tranche [Member] | Two Thousand and Twenty One Bridge Financing [Member]            
Non Operating Expense Income [Line Items]            
Debt principal amount 40,000     $ 40,000 $ 1,900  
Loss on issuance of debt   (12,185) 0      
Convertible debt fair value 52,200          
Two Thousand and Twenty One Bridge Notes [Member] | Tranche One And Two [Member] | Two Thousand and Twenty One Bridge Financing [Member]            
Non Operating Expense Income [Line Items]            
Debt issuance costs expensed   47,600        
Bridge Notes Rights Offering [Member] | Class A Common Stock Warrants [Member] | Incentive Shares Issued In Connection With Rights Offering [Member]            
Non Operating Expense Income [Line Items]            
Loss on issuance of debt   3,200        
Bridge Notes Rights Offering [Member] | Two Thousand and Twenty One Bridge Financing [Member]            
Non Operating Expense Income [Line Items]            
Debt principal amount   500        
Loss on issuance of debt   (3,193) $ 0      
Convertible debt fair value   600        
Debt issuance costs expensed   $ 100        
Bridge Notes Rights Offering [Member] | Two Thousand and Twenty One Bridge Financing [Member] | Class A Common Stock Warrants [Member] | Incentive Shares Issued In Connection With Rights Offering [Member]            
Non Operating Expense Income [Line Items]            
Class of warrants or rights issued during the period units   600,000        
Class of warrants or rights issued during the period value   $ 500        
Bridge Notes Rights Offering [Member] | Two Thousand and Twenty One Bridge Financing [Member] | Common Class A [Member] | Incentive Shares Issued In Connection With Rights Offering [Member]            
Non Operating Expense Income [Line Items]            
Stock shares issued during the period new issues value   $ 2,600        
Stock issued during the period shares bridge financing   3,400,000        
Bridge Notes Rights Offering [Member] | Debt First Tranche [Member] | Two Thousand and Twenty One Bridge Financing [Member]            
Non Operating Expense Income [Line Items]            
Debt principal amount $ 18,100