Net Income (Loss) Per Common Share - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Warrant
Earnings Per Share [Line Items]
Shares excluded from the computations of EPS				1,400,000
Income due to fair value adjustments related to warrants excluded from the computations of EPS	$ 1,300	$ 200	$ 1,300
Securities included in the computation of diluted EPS	700,000	1,400,000	700,000
Restricted Stock
Earnings Per Share [Line Items]
Restricted stock shares included in the computations of basic EPS	27,000	600,000	27,000
Shares excluded from the computations of EPS				600,000
Stock Options
Earnings Per Share [Line Items]
Shares excluded from the computations of EPS				5,100,000
Securities included in the computation of diluted EPS	6,300,000	5,100,000	6,300,000
Restricted Stock Units (RSUs)
Earnings Per Share [Line Items]
Securities included in the computation of diluted EPS	1,900,000		1,900,000