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Earnings Per Share - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jun. 15, 2013
Jun. 16, 2012
Jun. 15, 2013
Jun. 16, 2012
Earnings Per Share [Abstract]        
Options to purchase shares of common stock being anti-dilutive 730,735 587,347 687,131 541,729