Summary of Company's Restricted Common Stock Awards Activity (Detail) - Restricted Stock |
12 Months Ended |
|---|---|
|
Dec. 31, 2015
$ / shares
shares
| |
| Number of Restricted Share Awards | |
| Outstanding at January 1, 2015 | shares | 166,813 |
| Granted | shares | 242,916 |
| Vested | shares | (166,813) |
| Forfeited | shares | 0 |
| Outstanding awards at December 31, 2015 | shares | 242,916 |
| Weighted- Average Grant Date Fair Value | |
| Outstanding at January 1, 2015 | $ / shares | $ 5.73 |
| Granted | $ / shares | 2.47 |
| Vested | $ / shares | 5.73 |
| Forfeited | $ / shares | 0.00 |
| Outstanding awards at December 31, 2015 | $ / shares | $ 2.47 |