|
Net loss per share (Details)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2014
|
Mar. 31, 2013
|
|
| Antidilutive securities excluded from the computation of diluted net loss per share | ||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 18,549 | 15,855 |
|
Outstanding stock options
|
||
| Antidilutive securities excluded from the computation of diluted net loss per share | ||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 18,281 | 15,614 |
|
Warrant to purchase common stock
|
||
| Antidilutive securities excluded from the computation of diluted net loss per share | ||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 200 | 200 |
|
Purchase Plan
|
||
| Antidilutive securities excluded from the computation of diluted net loss per share | ||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 68 | 41 |