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Net Income Per Share - Additional Information (Detail) - Employee Stock Option - $ / shares
3 Months Ended 9 Months Ended
Oct. 02, 2015
Oct. 02, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 40,000 33,993
Antidilutive Shares Weighted Average Exercise Price $ 44.20 $ 44.20