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Net loss per share attributable to common stockholders | 12 Months Ended
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Dec. 31, 2015
Net loss per share attributable to common stockholders |
Net loss per share attributable to common stockholders | 17. Net loss per share attributable to common stockholders The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders:
|  | Years ended December 31, |
|  | 2015 |  | 2014 |  | 2013 |
|  | (in thousands) |
Numerator: |  |  |  |  |  |  |  |  |  |
Net loss attributable to common stockholders, basic and diluted |  | $ | (22,292 | ) | $ | (19,521 | ) | $ | (3,968 | )
Denominator: |  |  |  |  |  |  |  |  |  |
Weighted average number of common stock, basic and diluted |  |  | 36,849 |  |  | 35,753 |  |  | 35,578 |
Net loss per share attributable to common stockholders: |  |  |  |  |  |  |  |  |  |
Basic and diluted |  | $ | (0.60 | ) | $ | (0.55 | ) | $ | (0.11 | )
For the years ended December 31, 2015, 2014 and 2013, we excluded all assumed exercises of stock options and the assumed issuance of common stock under RSUs from the computation of diluted net loss per share as the effect would be anti-dilutive due to the net loss for the period.

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