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Open Market Share Repurchase Program - Additional Information (Detail) (USD $)
 3 Months Ended 0 Months Ended
Mar. 22, 2015
Mar. 23, 2014
Apr. 16, 2015
Share Repurchases [Line Items]      
Common stock repurchased and retired (in shares) 290,877us-gaap_StockRepurchasedAndRetiredDuringPeriodShares 221,481us-gaap_StockRepurchasedAndRetiredDuringPeriodShares  
Common stock repurchased and retired $ 29,512,000us-gaap_PaymentsForRepurchaseOfCommonStock $ 15,131,000us-gaap_PaymentsForRepurchaseOfCommonStock  
Stock repurchase program, amount remaining 103,200,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1    
Share repurchase program, approved amount 200,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1    
Subsequent Event [Member]      
Share Repurchases [Line Items]      
Common stock repurchased and retired (in shares)     177,695us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
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= us-gaap_SubsequentEventMember
Common stock repurchased and retired     $ 18,000,000us-gaap_PaymentsForRepurchaseOfCommonStock
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= us-gaap_SubsequentEventMember