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Stock-Based Compensation - Additional information (Detail)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2022
USD ($)
tranches
$ / shares
shares
Mar. 31, 2021
USD ($)
$ / shares
shares
Share based compensation by share award non vested options subject to forfeiture | shares 444,408 1,009,279
Share based compensation by share based award non vested options subject to forfeiture weighted average exercise price | $ / shares $ 0.69 $ 0.62
Chief Executive Officer [Member]    
Share-based payment arrangement, expense | $ $ 1.9  
Option Strike Price | $ / shares $ 0.72  
Granted, Shares | shares 11,456,061  
Fair value of the options on the grant date | $ $ 10.5  
Employee Stock Option [Member]    
Share-based payment arrangement, expense | $ $ 3.2 $ 1.7
Stock options granted during period | shares 0  
Employee Stock Option [Member] | Chief Executive Officer [Member]    
Share based payment arrangement number of tranches | tranches 9