Net Loss Per Share - Summary of Shares Excluded from Calculation of Diluted Loss Per Share with a Potential Dilutive Impact (Details) - shares
shares in Thousands |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |
|
|
| Shares excluded from calculation of diluted loss per share with a potential dilutive impact |
4,282
|
19,055
|
| Options to Purchase Common Stock |
|
|
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |
|
|
| Shares excluded from calculation of diluted loss per share with a potential dilutive impact |
3,261
|
3,910
|
| Common Stock Warrants |
|
|
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |
|
|
| Shares excluded from calculation of diluted loss per share with a potential dilutive impact |
17
|
103
|
| Common Stock Subject to Repurchase |
|
|
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |
|
|
| Shares excluded from calculation of diluted loss per share with a potential dilutive impact |
4
|
65
|
| Restricted Stock Units |
|
|
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |
|
|
| Shares excluded from calculation of diluted loss per share with a potential dilutive impact |
1,000
|
|
| Redeemable Convertible Preferred Stock |
|
|
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |
|
|
| Shares excluded from calculation of diluted loss per share with a potential dilutive impact |
|
14,977
|