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Shares Not Included in Diluted Earning per Share Computation (Detail)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 06, 2012
Oct. 05, 2013
Oct. 06, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive shares of common stock 206 59 206