Income (Loss) Per Share - Numerators and Denominators of Basic and Diluted Net Income (Loss) Per Share Computations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2015	Jun. 27, 2014	Jul. 03, 2015	Jun. 27, 2014
Numerator:
Net loss	$ (994)	$ (37,062)	$ (3,651)	$ (42,472)
Denominator:
Basic and diluted	88,426	93,966	88,541	95,899
Net loss per share:
Basic and diluted	$ (0.01)	$ (0.39)	$ (0.04)	$ (0.44)