v3.3.1.900

Warrants (Details) |  | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 20, 2014 $ / shares shares | Jul. 31, 2015 shares | Dec. 31, 2015 $ / shares shares | Apr. 30, 2014 $ / shares shares | Apr. 30, 2013 $ / shares | Dec. 31, 2009 $ / shares shares | Dec. 31, 2007 $ / shares shares
Class of Stock [Line Items] |  |  |  |  |  |  |
Warrants outstanding (in shares) |  |  |  |  |  |  | 24,538
Warrants exercise price (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.0978
Secured Loan Arrangement |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Warrants outstanding (in shares) |  |  |  | 376,691 |  |  |
Warrants exercise price (in dollars per share) | $ / shares |  |  |  | $ 2.3229 | $ 2.3229 |  |
B |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Warrants outstanding (in shares) |  |  |  |  |  | 33,742 |
Warrants exercise price (in dollars per share) | $ / shares |  |  |  |  |  | $ 1.8908 |
E |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Warrants outstanding (in shares) | 429,440 |  |  |  |  |  |
Warrants exercise price (in dollars per share) | $ / shares | $ 0.0163 |  |  |  |  |  |
Liquidation preference change (as a percent) | 2 |  |  |  |  |  |
Common stock |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Closing price (in dollars per share) | $ / shares |  |  | $ 11.57 |  |  |  |
Conversion into common shares (in shares) |  |  | 31,397,000 |  |  |  |
Common stock | B |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Common stock issued for each warrant (in shares) |  | 1 | 28,227 |  |  |  |
Common stock | E |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Conversion into common shares (in shares) |  | 429,042 |  |  |  |  |

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