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Net Loss Per Share | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Net Loss Per Share |
11. | Net Loss Per Share
Basic net loss per share is calculated by dividing the net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding during the period and giving effect to all potentially dilutive common shares using the treasury-stock method. For purposes of this calculation, outstanding stock options, stock awards, warrants and Series B Convertible Preferred Stock are considered to be potentially dilutive common shares and are only included in the calculation of diluted net loss per share when their effect is dilutive.
|  | December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Basic and diluted net loss per share (in thousands, except per share amounts): |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (112,444 | ) |  | $ | (106,794 | ) |  | $ | (90,722 | )
Denominator for basic and diluted net loss per share: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding |  |  | 38,506 |  |  |  | 32,881 |  |  |  | 26,289 |
Basic and diluted net loss per share |  | $ | (2.92 | ) |  | $ | (3.25 | ) |  | $ | (3.45 | )
Outstanding warrants, stock options, stock awards and Series B Convertible Preferred Stock were excluded from the calculation of net loss per share allocable to common stockholders as the effect of their inclusion would have been anti-dilutive.
|  | December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Outstanding securities not included in diluted net loss per share calculation (in thousands): |  |  |  |  |  |  |  |  |  |  |  |
Stock options and stock awards |  |  | 4,673 |  |  |  | 3,086 |  |  |  | 1,998 |
Series B Convertible Preferred Stock (as converted to common stock) |  |  | - |  |  |  | - |  |  |  | 4,343 |
Warrants |  |  | - |  |  |  | - |  |  |  | 1,081 |
|  |  | 4,673 |  |  |  | 3,086 |  |  |  | 7,422 |

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