Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Loss Per Share of Common Stock - Basic and Diluted Loss Per Share of Common Stock (Parenthetical) (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Earnings Per Share [Abstract]        
Anti-dilutive convertible senior common shares excluded from calculation of diluted earnings per share 429,673 257,429 362,162 217,010