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Net Income Per Share - Additional Information (Detail)
3 Months Ended 9 Months Ended
Oct. 03, 2014
Sep. 27, 2013
Oct. 03, 2014
Sep. 27, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Options excluded from the diluted per share 0 0 0 0