Net (Loss) Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Earnings Per Share [Abstract]
Basic and diluted Net (loss) income attributable to common stockholders	$ (24,862)	$ 9,406	$ (113,779)	$ 33,161
Shares used in basic Net (loss) income per share (in shares)	117,669	118,643	117,151	117,661
Dilutive effect of stock options, RSUs and ESPP shares (in shares)	0	2,327	0	2,788
Shares used in diluted Net (loss) income per share (in shares)	117,669	120,970	117,151	120,449
Basic Net (loss) income per share (in dollars per share)	$ (0.21)	$ 0.08	$ (0.97)	$ 0.28
Diluted Net (loss) income per share (in dollars per share)	$ (0.21)	$ 0.08	$ (0.97)	$ 0.28
Stock options, RSU's and ESPP shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of EPS (in shares)	3,200	2,700	9,400	2,400