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Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans - Additional Information (Detail)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
CompensationPlan
$ / shares
shares
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Equity-based compensation expense | $ $ 43,598 $ 54,091 $ 63,227
Tax benefit related to equity-based compensation costs | $ 17,000 $ 19,700 $ 22,900
Total unrecognized compensation cost for all outstanding Options and RSUs | $ $ 128,700    
Weighted-average period over which the unrecognized compensation will be recorded 2 years 1 month 6 days    
Options exercised (shares) 83,000 131,000 123,000
Combined plan contribution | $ $ 16,700 $ 17,900 $ 17,000
Shares contributed to the Employee Stock Ownership Plan 9,000 11,000  
Number of deferred compensation plans | CompensationPlan 2    
Common stock shares held in rabbi trust account 108,640 108,614  
RSUs [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Exercise price | $ / shares $ 0    
RSUs [Member] | Two Thousand Ten Equity Plan      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Restricted share units grants during period 0    
Options [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Number of years for options granted 10 years    
Options [Member] | 2014 Plan [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Restricted share units vesting period or Option vesting period 4 years    
Options issued under the plan 64,000    
Options vesting rights over four years in 25% increments beginning on December 31, 2016, or later based on the date of grant    
Percentage of options vesting rights 25.00%    
Options [Member] | Two Thousand Ten Equity Plan      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Restricted share units vesting period or Option vesting period 4 years    
Options issued under the plan 10,000    
Options vesting rights over four years in 25% increments beginning on December 31, 2018    
Percentage of options vesting rights 25.00%    
Options [Member] | Option Grant Contingent upon Continued Employment or Service as a Director and Achievement of Performance Metric | 2014 Plan [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Percentage of options vesting rights 50.00%    
Options granted 37,000    
Options [Member] | Option Grant Solely Contingent upon Continued Employment or Continued Service as a Director | 2014 Plan [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Percentage of options vesting rights 50.00%    
Options granted 27,000    
Options [Member] | Options Granted in Current Year [Member] | 2014 Plan [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Options vesting rights Over four years in 25% increments beginning on December 31, 2018    
Minimum [Member] | RSUs [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Restricted share units vesting period or Option vesting period 2 years    
Minimum [Member] | Options [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Restricted share units vesting period or Option vesting period 3 years    
Maximum [Member] | RSUs [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Restricted share units vesting period or Option vesting period 4 years    
Maximum [Member] | Options [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Restricted share units vesting period or Option vesting period 6 years