Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Loss per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2015
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 800,116 830,600 775,002