|
Net Loss Per Share - Weighted-Average Anti-Dilutive Securities Not Included in Diluted Net Loss Per Share (Details)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2014
|
Mar. 31, 2013
|
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Anti-dilutive securities not included in diluted net loss per share | 17,052 | 5,408 |
|
Options to purchase common stock [Member]
|
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Anti-dilutive securities not included in diluted net loss per share | 5,378 | 3,939 |
|
Unvested restricted share awards [Member]
|
||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Anti-dilutive securities not included in diluted net loss per share | 830 | 875 |