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Related Party Information (World headquarters relocation) - Additional Information (Detail) - WHQ Development [Member]
3 Months Ended
Mar. 26, 2014
USD ($)
a
May. 29, 2015
USD ($)
Feb. 28, 2015
USD ($)
Related Party Transaction [Line Items]      
Purchase price of land $ 7,400,000    
Area of land purchased | a 14.48    
Purchase price of land per acre $ 510,000    
Equity interest held by unconsolidated related party in development project owner 37.00%    
Anticipated year of completion for new world headquarters building   2016  
Initial lease term   15 years  
Expected annual lease rent   $ 9,500,000  
Increase in annual rent   1,000,000  
Construction Loan [Member]      
Related Party Transaction [Line Items]      
Revolving loan agreement, amount outstanding   2,500,000 $ 0
Maximum [Member] | Construction Loan [Member]      
Related Party Transaction [Line Items]      
Revolving loan agreement, maximum funding commitment   $ 9,000,000