Each Reference to Particular Quarter in Financial Statements Means Quarter Ended on Date Shown (Detail)	Jun. 15, 2012
Fiscal Years 2012 | Second Quarter
Quarterly Financial Information [Line Items]
Quarter-End Date	Jun. 15, 2012
Fiscal Years 2012 | First Quarter
Quarterly Financial Information [Line Items]
Quarter-End Date	Mar. 23, 2012
Fiscal Year 2011 | Second Quarter
Quarterly Financial Information [Line Items]
Quarter-End Date	Jun. 17, 2011
Fiscal Year 2011 | First Quarter
Quarterly Financial Information [Line Items]
Quarter-End Date	Mar. 25, 2011