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Net Income (Loss) per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2016
Components of Basic and Diluted Net Income (Loss) Per Common Share Computations | The following tables summarize the components of the basic and diluted net income (loss) per common share computations:
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | (In thousands, except per share data) |
Basic EPS: |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) (numerator) |  | $ | 125,664 |  |  | $ | (368,445 | ) |  | $ | (198,382 | )
Weighted average common shares (denominator) |  |  | 92,053 |  |  |  | 81,233 |  |  |  | 77,045 |
Net income (loss) per share |  | $ | 1.37 |  |  | $ | (4.54 | ) |  | $ | (2.57 | )
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) (numerator) |  | $ | 125,664 |  |  | $ | (368,445 | ) |  | $ | (198,382 | )
Weighted average common shares |  |  | 92,053 |  |  |  | 81,233 |  |  |  | 77,045 |
Effect of dilutive securities — common shares issuable |  |  | 32 |  |  |  | — |  |  |  | — |
Adjusted weighted average common shares (denominator) |  |  | 92,085 |  |  |  | 81,233 |  |  |  | 77,045 |
Net income (loss) per share |  | $ | 1.36 |  |  | $ | (4.54 | ) |  | $ | (2.57 | )
Potential Dilutive Securities Outstanding that are Considered Antidilutive | Potentially dilutive securities outstanding that are considered antidilutive are summarized as follows (in shares):
|  | December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Exercise of common stock options |  |  | 5,530,256 |  |  |  | 3,955,845 |  |  |  | 4,308,332 |
Conversion of senior convertible notes into common stock |  |  | 814,561 |  |  |  | 814,561 |  |  |  | 3,464,616 |
Exercise of common stock warrants |  |  | 9,740,597 |  |  |  | 814,919 |  |  |  | 1,997,575 |
Vesting of restricted stock units |  |  | 702,867 |  |  |  | 360,924 |  |  |  | 522,144 |
|  |  | 16,788,281 |  |  |  | 5,946,249 |  |  |  | 10,292,667 |

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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://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -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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