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Employee Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Detail) - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Service Condition Based Restricted Stock Unit Grants      
Summarizes restricted stock activity      
Shares, Nonvested, Beginning balance 1,401    
Shares, Granted 645    
Shares, Vested (726)    
Shares, Forfeited (37)    
Shares, Nonvested, Ending balance 1,283 1,401  
Weighted Average Grant Date Fair Value, Nonvested, Beginning Balance $ 17.60    
Weighted Average Grant Date Fair Value, Granted 47.36 $ 19.54 $ 14.29
Weighted Average Grant Date Fair Value, Vested 19.01    
Weighted Average Grant Date Fair Value, Forfeited 45.38    
Weighted Average Grant Date Fair Value, Nonvested, Ending Balance $ 30.97 $ 17.60  
Performance Market and Service Condition Based Restricted Stock Unit Grants      
Summarizes restricted stock activity      
Shares, Nonvested, Beginning balance 948    
Shares, Granted 284    
Shares, Vested (442)    
Shares, Forfeited (15)    
Shares, Nonvested, Ending balance 775 948  
Weighted Average Grant Date Fair Value, Nonvested, Beginning Balance $ 18.97    
Weighted Average Grant Date Fair Value, Granted 41.62 $ 23.18 $ 14.42
Weighted Average Grant Date Fair Value, Vested 20.62    
Weighted Average Grant Date Fair Value, Forfeited 44.45    
Weighted Average Grant Date Fair Value, Nonvested, Ending Balance $ 25.85 $ 18.97