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Net Income Per Share - Computation of Basic Net Income Per Share and Diluted Net Income Per Share (Parenthetical) (Detail)
3 Months Ended 6 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Jul. 02, 2017
Jul. 03, 2016
Earnings Per Share [Abstract]        
Percentage undistributed earnings allocated to common stock diluted 100.00% 100.00% 100.00% 100.00%