Liquidity - Additional Information (Detail) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2012 |
|
| Liquidity And Managements Plans [Abstract] | ||||
| Cash and cash equivalents | $ 83,560 | $ 70,472 | $ 23,176 | $ 63,189 |
| Cash from operations | (3,732) | (28,833) | (60,102) | |
| Stockholders' equity | $ 31,696 | $ 54,396 | $ (812) | $ 49,778 |