Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Preferred stock, par value (in usd per share) | $ 0.00001 | $ 0.00001 |
| Preferred stock, shares authorized (in shares) | 5,000,000 | 5,000,000 |
| Preferred stock, shares issued (in shares) | 0 | 0 |
| Preferred stock, shares outstanding (in shares) | 0 | 0 |
| Common stock, par value (in usd per share) | $ 0.00001 | $ 0.00001 |
| Common stock, shares authorized (in shares) | 100,000,000 | 100,000,000 |
| Common stock, shares issued (in shares) | 23,075,831 | 20,695,160 |
| Common stock, shares, outstanding (in shares) | 23,075,831 | 20,695,160 |