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Share-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended
Feb. 25, 2020
May 15, 2018
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Number of stock options granted to employees (in shares)     1,455,450 852,975  
Vesting period (in years)     4 years    
Options outstanding (in shares)     8,412,412   7,008,403
Weighted average exercise price (in dollars per share)     $ 21.41   $ 23.34
Share-based compensation cost not yet recognized, Stock Options     $ 45,600,000    
Expected recognition period of share-based compensation not yet recognized     2 years 9 months 7 days    
Stock Option [Member]          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Tax benefit from compensation expense     $ 1,100,000 $ 1,200,000  
Intrinsic value of options exercised     $ 35,000 $ 6,100  
2018 Long Term Incentive Plan [Member]          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Grant period     10 years    
Authorized shares for issuance (in shares)   1,800,000      
Number of additional shares authorized (in shares)   1,177,933      
Maximum number of shares to be issued - ISO exercise (in shares)     2,500,000    
Number of shares available for grant (in shares)     41,972    
2012 Long Term Incentive Plan [Member]          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Grant period     10 years    
2020 Employment Inducement Incentive Plan [Member]          
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]          
Grant period 10 years        
Authorized shares for issuance (in shares) 240,000        
Number of shares available for grant (in shares) 0