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Stock Plans - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost $ 9,500    
Weighted average period to recognize compensation cost 2 years 2 months 12 days    
Compensation cost on stock-based compensation plans $ 6,100 $ 6,200 $ 5,800
Tax benefit recognized from all stock-based employee compensation plans 2,000 2,000 1,900
Cash received from stock option exercises 1,702 1,776 6,862
Employee service share based compensation tax benefit realized from share based compensation plans $ 1,700 $ 3,200 $ 3,200
Omnibus Incentive 2016 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum grant of stock options, restricted stock, and restricted stock units to directors and employees 1,700,000    
Omnibus Incentive 2016 Plan [Member] | Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period for stock option awards 10 years    
Stock options granted 0 0 0
Weighted average remaining contractual term of options outstanding 3 years 4 months 24 days    
Weighted average remaining contractual term of options exercisable 3 years 4 months 24 days    
Aggregate intrinsic value of options outstanding $ 700    
Aggregate intrinsic value of options exercisable 700    
Total intrinsic value of options exercised $ 3,900 $ 1,800 $ 13,000
Omnibus Incentive 2016 Plan [Member] | Stock Options [Member] | Non Employee Director [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable period from the date of grant for stock option granted 1 year    
Omnibus Incentive 2016 Plan [Member] | Stock Options [Member] | Employee [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable period from the date of grant for stock option granted 1 year    
Omnibus Incentive 2016 Plan [Member] | Stock Options [Member] | Employee [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable period from the date of grant for stock option granted 4 years    
Omnibus Incentive 2016 Plan [Member] | Restricted Stock Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted, Weighted Average Grant-Date Fair-Value $ 47.71 $ 57.21 $ 41.61
Fair value of restricted stock awards vested $ 8,900 $ 14,000 $ 7,000
Omnibus Incentive 2016 Plan [Member] | Restricted Stock Awards [Member] | Non Employee Director [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable period from the date of grant for stock option granted 1 year    
Omnibus Incentive 2016 Plan [Member] | Restricted Stock Awards [Member] | Employee [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable period from the date of grant for stock option granted 1 year    
Omnibus Incentive 2016 Plan [Member] | Restricted Stock Awards [Member] | Employee [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable period from the date of grant for stock option granted 4 years