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Equity Incentive Plan - Schedule of RSUs Activity for Performance-based RSUs Awarded to Employees Under 2019 Plan (Detail) - 2019 Plan [Member] - Restricted Stock Units [Member]
9 Months Ended
Sep. 30, 2022
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Beginning balance 1,513,892
Granted 576,889
Vested - non-employee director awards (106,991)
Forfeited (56,312)
Ending balance 1,927,478