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Stock-Based Compensation - Stock Plans (Detail) - shares
6 Months Ended
Jun. 30, 2022
Jun. 18, 2015
2015 Omnibus Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares authorized (in shares)   9,625,000
Vesting period 4 years  
Expiration period 10 years  
2015 Omnibus Equity Incentive Plan | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period 48 months  
Exercise period following termination 90 days  
2015 Omnibus Equity Incentive Plan | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period 12 months  
Restricted stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Restricted stock, granted (in shares) 1,340,000  
Restricted stock | 2015 Omnibus Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Restricted stock, granted (in shares) 1,300,000  
Number of shares available for future grants (in shares) 2,500,000  
Full value awards | 2015 Omnibus Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Awards settled in shares, adjustments against share reserve (in shares) 1.2  
Partial value awards | 2015 Omnibus Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Awards settled in shares, adjustments against share reserve (in shares) 1.0