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Summary of RSU Activity (Detail) - Restricted Stock Units
3 Months Ended
Mar. 31, 2021
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Beginning Balance, Unvested, Number Outstanding | shares 682,563
Granted, Number Outstanding | shares 82,151
Vested, Number Outstanding | shares (124,558)
Forfeited, Number Outstanding | shares (7,063)
Ending Balance, Unvested, Number Outstanding | shares 633,093
Shares vested but not released, Number Outstanding | shares 344,726
Beginning Balance, Unvested, Weighted Average Fair Value | $ / shares $ 4.34
Granted, Weighted Average Fair Value | $ / shares 11.18
Vested, Weighted Average Fair Value | $ / shares 5.32
Forfeited, Weighted Average Fair Value | $ / shares 2.93
Ending Balance, Unvested, Weighted Average Fair Value | $ / shares 5.05
Shares vested but not released, Weighted Average Fair Value | $ / shares $ 5.08