Condensed Consolidated Statements of Changes in Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2014
USD ($)
| |
| Statement of Stockholders' Equity [Abstract] | |
| For cash, issuance costs | $ 169 |
| Warrant exchange, issuance costs | $ 49 |