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Restructuring - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Apr. 30, 2020
Dec. 31, 2020
Dec. 31, 2021
Restructuring Cost And Reserve [Line Items]      
Operating expenses, workforce reduction, percent 53.00%    
Restructuring accrual   $ 203,000 $ 0
Employee Severance      
Restructuring Cost And Reserve [Line Items]      
Employee severance, benefits, and related costs   $ 27,700,000