Annual report pursuant to Section 13 and 15(d)

Rent Expense Excluding Real Estate Taxes Common Area Maintenance Charges Insurance Deferred Lease Incentives and Other Expenses Related to Operating Leases (Detail)

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Rent Expense Excluding Real Estate Taxes Common Area Maintenance Charges Insurance Deferred Lease Incentives and Other Expenses Related to Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Dec. 25, 2011
Dec. 26, 2010
Minimum And Contingent Rental Expense [Line Items]      
Total minimum and contingent rent expense $ 8,650 $ 6,446 $ 4,750
Related Parties
     
Minimum And Contingent Rental Expense [Line Items]      
Minimum rent expense 1,879 1,749 1,663
Contingent rent expense 531 472 409
Total minimum and contingent rent expense 2,410 2,221 2,072
Unrelated Parties
     
Minimum And Contingent Rental Expense [Line Items]      
Minimum rent expense 5,968 4,028 2,582
Contingent rent expense 272 197 96
Total minimum and contingent rent expense $ 6,240 $ 4,225 $ 2,678