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Net Income (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 28, 2018
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Basic and Diluted Net Loss Per Share | The computation of basic and diluted net income (loss) per share was as follows (in thousands, except per share amounts):
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Numerator: |  |  |  |  |
Net income (loss) | $ | 690,070 |  |  | $ | 154,227 |  |  | $ | (70,222 | )
Net income allocated to participating securities | — |  |  | (367 | ) |  | — |
Net income (loss) allocable to common stock for basic net income (loss) per share | 690,070 |  |  | 153,860 |  |  | (70,222 | )
Adjustment to net income allocated to participating securities | — |  |  | 22 |  |  | — |
Net income (loss) allocable to common stock for diluted net income (loss) per share | $ | 690,070 |  |  | $ | 153,882 |  |  | $ | (70,222 | )
Denominator: |  |  |  |  |
Weighted-average shares of common stock outstanding used in computing basic net income (loss) per share | 297,892 |  |  | 293,588 |  |  | 250,531 |
Dilutive securities | 14,911 |  |  | 18,415 |  |  | — |
Weighted-average shares of common stock outstanding and dilutive securities used in computing diluted net income (loss) per share | 312,803 |  |  | 312,003 |  |  | 250,531 |
Net income (loss) per share, basic | $ | 2.32 |  |  | $ | 0.52 |  |  | $ | (0.28 | )
Net income (loss) per share, diluted | $ | 2.21 |  |  | $ | 0.49 |  |  | $ | (0.28 | )
Schedule of Potential Shares of Common Stock Not Included In Computation of Diluted Net Loss Per Share | Potential shares of common stock not included in the computation of diluted net income (loss) per share because to do so would be anti-dilutive was as follows (in thousands):
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Outstanding stock options, unvested RSUs and ESPP contributions | 3,968 |  |  | 1,645 |  |  | 27,568 |
Secured Convertible Notes due 2018 held by entities associated with Deerfield Management Company, L.P. (Deerfield Notes) | — |  |  | — |  |  | 33,890 |
2014 Warrants | — |  |  | — |  |  | 1,000 |
Total | 3,968 |  |  | 1,645 |  |  | 62,458 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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