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Capital Stock - Additional Information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
May 31, 2017
Dec. 30, 2017
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of outstanding shares owned by controlling family   20.00%      
Shares authorized of undesignated capital stock for future issuance   50,000,000      
Authorized number of common stock shares for grant   2,000,000      
Date of plan approval   May 20, 2009      
Maximum grant period from date of plan approval   10 years      
Shares available for grant under the plan   1,399,106      
Compensation cost related to restricted stock   $ 2,800,000 $ 2,300,000 $ 900,000  
Compensation cost related to stock options   $ 300,000 $ 100,000 100,000  
Weighted-average grant-date fair value   $ 78.58 $ 44.36    
Cash received from stock option exercises under the plan   $ 31,000   $ 93,000  
Stock options exercised   32,751   35,000  
Total 401(K) expense   $ 2,700,000 $ 2,500,000 $ 2,700,000  
Common stock, shares held by 401(K) plan   269,628      
Repurchase and cancellation of shares   19,110 38,970 33,430  
Common stock repurchased, average price   $ 73.34 $ 56.66 $ 48.14  
Common stock repurchased, value   $ 1,400,000 $ 2,200,000 $ 1,600,000  
Share Repurchase Program [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock repurchased, average price   $ 74.26 $ 52.15 $ 47.77  
Common stock repurchased, value   $ 74,700,000 $ 22,500,000 $ 35,700,000  
Share repurchase program shares authorized to be repurchased       $ 250,000,000 $ 10,000,000
Shares repurchased under share repurchase program   1,006,365 430,866 747,700  
Authorized date of repurchase of outstanding common stock   Dec. 12, 2013      
Employee Stock Purchase Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Authorized number of common stock shares for grant 1,000,000        
Rate of discount on shares of common stock available for sale to eligible employees 15.00%        
Number of shares purchased   0      
Compensation cost   $ 100,000      
Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Cash received from stock option exercises under the plan   100,000      
Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Capitalized compensation cost   0 $ 0 $ 0  
Unrecognized compensation cost related to non-vested stock options   $ 4,600,000      
Unrecognized compensation cost related to nonvested stock options, weighted-average period   2 years 7 months 6 days      
Tax benefit generated from compensation cost and credited   $ 400,000 300,000 300,000  
Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Capitalized compensation cost   0 0 0  
Unrecognized compensation cost related to non-vested stock options   $ 1,000,000      
Unrecognized compensation cost related to nonvested stock options, weighted-average period   2 years 10 months 24 days      
Tax benefit generated from compensation cost and credited   $ 600,000 $ 0 $ 100,000  
Stock options granted       0  
Weighted-average grant-date fair value   $ 15.81 $ 8.40    
Stock options exercised     0    
Performance-Based Long Term Award Program [Member] | Executives [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Term of compensation on compound annual growth in our pre-tax income   3 years