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Net Loss per Share Attributable to Common Stockholders | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Net Loss per Share Attributable to Common Stockholders | 15. Net Loss per Share Attributable to Common Stockholders As the Company had net losses for the years ended December 31, 2016, 2015 and 2014, all potential common shares were determined to be anti-dilutive. The following table sets forth the computation of the basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data):
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (37,177 | ) |  | $ | (14,858 | ) |  | $ | (11,072 | )
Accretion of redeemable convertible preferred stock |  |  | (558 | ) |  |  | (75 | ) |  |  | (146 | )
Net loss attributable to common stockholders |  | $ | (37,735 | ) |  | $ | (14,933 | ) |  | $ | (11,218 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares used to compute net loss per common share, basic and diluted |  |  | 6,501,796 |  |  |  | 251,717 |  |  |  | 227,197 |
Net loss per share attributable to common stockholders, basic and diluted |  | $ | (5.80 | ) |  | $ | (59.32 | ) |  | $ | (49.38 | )
The following outstanding shares of potentially dilutive securities have been excluded from diluted net loss per share calculations for the years ended December 31, 2016, 2015 and 2014, because their inclusion would be anti-dilutive: |
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Redeemable convertible preferred stock on an as-converted basis |  |  | — |  |  |  | 5,323,103 |  |  |  | 2,899,134 |
Options to purchase common stock |  |  | 2,393,829 |  |  |  | 833,178 |  |  |  | 476,006 |
Warrants to purchase redeemable convertible preferred stock on an as-converted basis |  |  | — |  |  |  | 275,861 |  |  |  | 275,861 |
Total |  |  | 2,393,829 |  |  |  | 6,432,142 |  |  |  | 3,651,001 |

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