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Stockholders' Equity - Summary of Performance-based Market Condition Share Awards (Detail) - Performance-based Market Condition Share Awards [Member] - $ / shares
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Class of Stock [Line Items]    
Shares, Granted 25,423,674 0
Shares, Cancelled/Forfeited (1,568,889)  
Shares, Unvested as of June 30, 2022 23,854,785  
Weighted Average Grant Date Fair Value, Granted $ 2.21  
Weighted Average Grant Date Fair Value, Cancelled/Forfeited 2.62  
Weighted Average Grant Date Fair Value, Unvested as of June 30, 2022 $ 2.18