Preferred Stock, Common Stock and Stockholders' Equity - Preferred Stock - Additional Information (Detail) - $ / shares |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Equity [Abstract] | ||
| Preferred stock, shares authorized | 5,000,000 | 5,000,000 |
| Preferred stock, par value | $ 0.0001 | $ 0.0001 |
| Preferred stock, shares outstanding | 0 | 0 |