Redeemable Preferred Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
Aug. 20, 2013 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Sep. 16, 2011 |
|
| Class of Stock [Line Items] | |||||
| Preferred stock, shares authorized | 100,000,000 | ||||
| Preferred stock, par/stated value | $ 0.01 | ||||
| Proceeds from issuance of preferred stock | $ 0 | $ 0 | $ 77,241 | ||
| Shares of Series A Preferred Stock or Series B Preferred Stock issuable in the future | 0 | ||||
| Preferred stock dividends | $ 0 | $ 0 | 9,395 | ||
| Series A Redeemable Preferred Stock | |||||
| Class of Stock [Line Items] | |||||
| Preferred stock, shares authorized | 2,000,000 | ||||
| Preferred stock, par/stated value | $ 0.01 | ||||
| Liquidation preference | $ 1,000 | ||||
| Preferred stock dividends | $ 6,800 | ||||
| Series B Preferred Stock | |||||
| Class of Stock [Line Items] | |||||
| Preferred stock, shares authorized | 150,000 | ||||
| Preferred stock, par/stated value | $ 0.01 | ||||
| Liquidation preference | $ 1,000 | ||||
| Proceeds from issuance of preferred stock | $ 77,200 | ||||
| Preferred stock, shares issued | 77,241 | ||||