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Net Loss per Share | 6 Months Ended
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Jun. 30, 2017
Earnings Per Share [Abstract] |
Net Loss per Share | Net Loss per Share The following table summarizes the computation of basic and diluted net loss per share of our common stock for the three and six months ended June 30, 2017 and 2016:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
| (in thousands, except share and per share data)
Numerator: |  |  |  |  |  |  |
Net loss | $ | (11,637 | ) |  | $ | (13,452 | ) |  | $ | (22,182 | ) |  | $ | (29,032 | )
Denominator: |  |  |  |  |  |  |
Weighted-average common shares outstanding, basic and diluted | 42,681,287 |  |  | 41,063,613 |  |  | 42,395,450 |  |  | 40,805,641 |
Net loss per share attributable to common stockholders, basic and diluted | $ | (0.27 | ) |  | $ | (0.33 | ) |  | $ | (0.52 | ) |  | $ | (0.71 | )
The following potentially dilutive securities outstanding, prior to the use of the treasury stock method or if-converted method, have been excluded from the computation of diluted weighted-average shares outstanding for the respective periods below because they would have been anti-dilutive:
| Three and Six Months Ended June 30,
| 2017 |  | 2016
Options to purchase common stock | 5,041,268 |  |  | 4,766,320 |
Unvested restricted stock | 420,541 |  |  | 811,681 |
Unvested restricted stock units | 1,878,730 |  |  | 619,240 |
Shares to be issued under ESPP | 76,647 |  |  | 103,471 |
Total | 7,417,186 |  |  | 6,300,712 |

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