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Open Market Share Repurchase Program - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 14, 2015
Jun. 15, 2014
Jun. 14, 2015
Jun. 15, 2014
Jul. 15, 2015
Share Repurchases [Line Items]          
Common stock repurchased and retired (in shares) 637,587 687,750 928,464 909,231  
Common stock repurchased and retired $ 68,100 $ 49,900 $ 97,634 $ 65,006  
Stock repurchase program, amount remaining 35,100   35,100    
Share repurchase program, approved amount $ 200,000   $ 200,000    
Subsequent Event [Member]          
Share Repurchases [Line Items]          
Share repurchase program, approved amount         $ 200,000