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

v2.4.0.8

Earnings (Loss) Per Share of Common Stock - Basic and Diluted Earnings (Loss) per Share of Common Stock (Parenthetical) (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013
Earnings Per Share [Abstract]
Additional convertible senior common stock	195,759	66,000	180,753