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Stockholders' Equity - Summary of Unvested Restricted Stock Unit Activity (Detail) - Restricted Stock Units [Member]
 12 Months Ended
Dec. 31, 2023
$ / shares
shares
Class of Stock [Line Items]  
Unvested as of January 1, 2023 | shares 19,316,459
Shares, Granted | shares 15,980,943
Shares, Vested | shares (8,956,584)
Shares, Forfeited | shares (3,917,923)
Unvested as of December 31, 2023 | shares 22,422,895
Weighted Average Grant Date Fair Value, Unvested as of January 1, 2023 | $ / shares $ 10.78
Weighted Average Grant Date Fair Value, Granted | $ / shares 2.47
Weighted Average Grant Date Fair Value, Vested | $ / shares 7.16
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 4.22
Weighted Average Grant Date Fair Value, Unvested as of December 31, 2023 | $ / shares $ 7.45