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Stock-Based Compensation - Schedule of Employee Awards and Non-employee Director Award Plan Activity (Parenthetical) (Detail) - $ / shares
shares in Thousands
3 Months Ended
Jun. 30, 2021
Mar. 31, 2021
RSUs    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Restricted stock units weighted average grant date fair value   $ 5.53
Employees Awards | RSUs    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Restricted stock units weighted average grant date fair value $ 4.26  
Vesting period 4 years  
Employees Awards | RSUs | Share-based Payment Arrangement, Tranche One    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Vesting period   1 year
Restricted stock units grant date fair value   202,237
Employees Awards | RSUs | Share-based Payment Arrangement, Tranche Two    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Vesting period   4 years
Restricted stock units grant date fair value   167,900
Employees Awards | Market RSU's    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Restricted stock units weighted average grant date fair value $ 9.30  
Vesting date May 17, 2024  
Employees Awards | Market RSU's | Share-based Payment Arrangement, Tranche One    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 0.00%  
Employees Awards | Market RSU's | Share-based Payment Arrangement, Tranche Two    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%  
Employees Awards | Market RSU's | Index Target 50th Percentile    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 100.00%  
Employees Awards | Market RSU's | Index Target 75th Percentile    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 200.00%  
Employees Awards | Market RSU's | Index Target 90th Percentile or Higher    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 300.00%  
Non-employee Directors Awards | RSUs    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Restricted stock units weighted average grant date fair value $ 4.31