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Stock-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Options, Outstanding, Beginning Balance 5,469,393 4,450,517  
Number of Options, Granted 1,422,750    
Number of Options, Exercised (136,787)    
Number of Options, Forfeited (239,457)    
Number of Options, Expired (3,619)    
Number of Options, Outstanding, Ending Balance 6,512,280 5,469,393 4,450,517
Number of Options, Outstanding, Weighted average remaining contractual life as of December 31, 2021 6 years 10 months 17 days    
Number of Options, Options exercisable 4,120,917    
Number of Options, Exercisable, Weighted average remaining contractual life as of December 31, 2021 5 years 9 months 14 days    
Number of Options, Options vested and expected to vest at December 31, 2021 6,449,787    
Number of Options, Vested and expected to vest, Weighted average remaining contractual life as of December 31, 2021 6 years 21 days    
Weighted-Average Exercise Price, Outstanding, Beginning Balance $ 15.02    
Weighted-Average Exercise Price, Granted 17.82    
Weighted-Average Exercise Price, Exercised 11.98    
Weighted-Average Exercise Price, Forfeited 18.01    
Weighted-Average Exercise Price, Expired 24.93    
Weighted-Average Exercise Price, Outstanding, Ending Balance 15.58 $ 15.02  
Weighted-Average Exercise Price, Options exercisable, December 31, 2021 14.73    
Weighted-Average Exercise Price, Options vested and expected to vest at December 31, 2021 $ 15.39    
Aggregate Intrinsic Value, Outstanding at December 31, 2021 $ 3,537    
Aggregate Intrinsic Value, Options exercisable at December 31, 2021 3,525    
Aggregate Intrinsic Value, Options vested and expected to vest at December 31, 2021 3,537    
Fair value of options vested 12,844 $ 12,819 $ 10,074
Intrinsic value of options exercised $ 965 $ 152 $ 5,741