Annual report pursuant to Section 13 and 15(d)

Loss per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock (Parenthetical) (Detail)

v3.3.1.900
Loss per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock (Parenthetical) (Detail) - shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Senior Common Stock [Member]      
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]      
Anti-dilutive convertible shares of senior common stock excluded from calculation of diluted earnings per share 782,958 428,509 238,126