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STOCKHOLDERS’ EQUITY - Summary of Nonvested Restricted Stock Units Activity (Detail) - Restricted Stock Units - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
RSUs shares      
Nonvested Units at beginning of year (in shares) 1,611    
Granted (in shares) 537    
Vested (in shares) (740)    
Forfeited (in shares) (134)    
Nonvested Units at end of year (in shares) 1,274 1,611  
RSUs weighted-average grant date fair value      
Weighted-average grant date fair value Nonvested Units at beginning of year (in dollars per share) $ 56.45    
Weighted-average grant date fair value Granted (in dollars per share) 75.60 $ 67.11 $ 55.11
Weighted-average grant date fair value Vested (in dollars per share) 51.82    
Weighted-average grant date fair value Forfeited (in dollars per share) 63.90    
Weighted-average grant date fair value Nonvested Units at end of year (in dollars per share) $ 66.46 $ 56.45