Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Numerator:
Net income (loss)	$ (58,240)	$ 6,341	$ (118,319)	$ 17,376
Denominator:
Weighted-average shares of common stock—basic (in shares)	230,322	218,850	228,788	217,431
Effect of dilutive securities (in shares)	0	23,478	0	24,722
Weighted-average shares of common stock—diluted (in shares)	230,322	242,328	228,788	242,153
Net income (loss) per share:
Basic (in dollars per share)	$ (0.25)	$ 0.03	$ (0.52)	$ 0.08
Diluted (in dollars per share)	$ (0.25)	$ 0.03	$ (0.52)	$ 0.07

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed. Includes the adjustments resulting from the assumption that dilutive securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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