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