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Net Income (Loss) Per Share | 6 Months Ended
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Jun. 30, 2017
Earnings Per Share [Abstract] |
Net Income (Loss) Per Share | Net Loss Per Share Basic and diluted earnings per share are calculated as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Numerator: |  |  |  |  |  |  |
Net income (loss) (in thousands) | $ | (8,404 | ) |  | $ | 5,389 |  |  | $ | (20,122 | ) |  | $ | (11,104 | )
Denominator: |  |  |  |  |  |  |
Weighted average number of common shares outstanding | 37,421,273 |  | 9,101,730 |  | 31,944,243 |  | 9,035,173
Effect of dilutive securities |  |  |  |  |  |  |
Stock options | — |  |  | 33,864 |  |  | — |  |  | — |
Warrants | — |  |  | 138,273 |  |  | — |  |  | — |
Dilutive potential common shares | — |  |  | 172,137 |  |  | — |  |  | — |
Shares used in calculating diluted earnings per share | 37,421,273 |  |  | 9,273,867 |  |  | 31,944,243 |  |  | 9,035,173 |
Basic net income (loss) per share | $ | (0.22 | ) |  | $ | 0.59 |  |  | $ | (0.63 | ) |  | $ | (0.30 | )
Diluted net income (loss) per share | $ | (0.22 | ) |  | $ | 0.58 |  |  | $ | (0.63 | ) |  | $ | (0.30 | )
The following table sets forth the potentially dilutive common shares excluded from the calculation of net loss per common share because their inclusion would be anti-dilutive (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Warrants to purchase common stock | 19,557 |  |  | 1,076 |  |  | 19,557 |  |  | 1,871 |
Options to purchase common stock | 505 |  |  | 322 |  |  | 505 |  |  | 515 |
Total | 20,062 |  |  | 1,398 |  |  | 20,062 |  |  | 2,386 |

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