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

Significant Accounting Policies - Additional Information (Detail)

v3.22.2
Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
shares
Mar. 31, 2021
USD ($)
shares
Mar. 31, 2021
USD ($)
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2021
USD ($)
Segment
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Accounting Policies [Line Items]              
Temporary equity shares outstanding | shares 97,611,343     97,611,343 97,611,343 97,611,343  
Unrecognized tax benefits       $ 40,000 $ 40,000 $ 35,000 $ 530,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares 126,192,489 121,959,255     124,530,258 116,192,153 89,267,475
Gross proceeds from issue from redeemable convertible preferred stock $ 478,300,000       $ 478,300,000    
Retained Earnings (Accumulated Deficit) 537,527,000     490,143,000 490,143,000 $ 354,247,000  
Cash and Cash Equivalents, at Carrying Value 74,428,000     78,376,000 78,376,000 176,523,000  
Net Income (Loss) Attributable to Parent (47,384,000) $ (37,895,000)     (135,896,000) (72,260,000) $ (161,470,000)
Net Cash Provided by (Used in) Operating Activities (29,503,000) (27,952,000)     $ (127,089,000) (83,656,000) (124,805,000)
Number of Operating Segments | Segment         1    
Contract with Customer, Liability, Current 11,426,000     11,267,000 $ 11,267,000 11,119,000  
Costs Of Fulfillment 24,400,000 25,400,000     95,500,000 96,900,000 91,500,000
Shipping And Handling Expenses 14,300,000 15,100,000     56,100,000 57,300,000 48,700,000
Fulfillment Labour Charges 6,600,000 6,300,000     24,500,000 24,900,000 $ 29,900,000
Proceeds From Contingently Redeemable Convertible Common Stock 27,500,000 $ 0          
Contract with Customer, Liability, Revenue Recognized 6,000,000            
Other current liabilities revenue recognized 200,000            
Backstop Agreement [Member]              
Accounting Policies [Line Items]              
Proceeds From Contingently Redeemable Convertible Common Stock 27,500,000            
Deferred Revenue [Member]              
Accounting Policies [Line Items]              
Contract with Customer, Liability, Current 11,400,000     11,300,000 11,300,000 11,100,000  
Other Current Liabilities [Member]              
Accounting Policies [Line Items]              
Contract with Customer, Liability, Current 400,000     300,000 300,000 500,000  
Liability for customer referral credits current 100,000     100,000 $ 100,000 $ 100,000  
Minimum | Software and Software Development Costs [Member]              
Accounting Policies [Line Items]              
Finite-Lived Intangible Asset, Useful Life         3 years 3 years 3 years
Minimum | Purchases Benchmark [Member] | Supplier Concentration Risk [Member] | Five Suppliers [Member]              
Accounting Policies [Line Items]              
Concentration Risk, Percentage         50.00% 50.00% 50.00%
Minimum | No Customer [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member]              
Accounting Policies [Line Items]              
Concentration Risk, Percentage         10.00% 10.00% 10.00%
Maximum [Member] | Software and Software Development Costs [Member]              
Accounting Policies [Line Items]              
Finite-Lived Intangible Asset, Useful Life         4 years 4 years 4 years
Virgin Group Acquisition Corp. II [Member]              
Accounting Policies [Line Items]              
Cash 0     0 $ 0    
Total transaction costs incurred in connection with initial public offering 19,845,525     19,845,525      
Offering costs allocated to derivative warrant liabilities 0   $ 497,634 570,496      
Unrecognized tax benefits 0     0 0    
Unrecognized tax benefits income tax penalties and interest accrued 0     0 0    
Retained Earnings (Accumulated Deficit) 53,093,506     29,541,309 29,541,309    
Net Income (Loss) Attributable to Parent (23,552,197)   (732,339) 2,698,369      
Net Cash Provided by (Used in) Operating Activities $ (427,410,000,000)   $ (5,000,000,000) $ (1,922,242,000,000)      
Virgin Group Acquisition Corp. II [Member] | Potential Ordinary Shares [Member]              
Accounting Policies [Line Items]              
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares 14,750,000   13,000,000 14,750,000      
Virgin Group Acquisition Corp. II [Member] | IPO              
Accounting Policies [Line Items]              
Total transaction costs incurred in connection with initial public offering $ 22,733,025     $ 22,733,025      
Adjustment to additional paid in capital stock issuance costs       22,162,529      
Virgin Group Acquisition Corp. II [Member] | Public Warrants [Member] | IPO              
Accounting Policies [Line Items]              
Total transaction costs incurred in connection with initial public offering 22,162,529            
Virgin Group Acquisition Corp. II [Member] | Private Warrants [Member] | IPO              
Accounting Policies [Line Items]              
Total transaction costs incurred in connection with initial public offering 570,496            
Virgin Group Acquisition Corp. II [Member] | Minimum              
Accounting Policies [Line Items]              
Cash insured with federal depository insurance corporation $ 250,000     $ 250,000 $ 250,000    
Virgin Group Acquisition Corp. II [Member] | Class A Common Stock Subject To Possible Redemption              
Accounting Policies [Line Items]              
Temporary equity shares outstanding | shares 40,250,000     40,250,000 40,250,000