Accounting for Stock-Based Compensation - Summary of Outstanding Stock Options (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding at beginning of period, Shares	3,002,480	3,010,980
Granted, Shares
Exercised, Shares
Forfeited and expired, Shares	(2,147,500)
Outstanding at end of period, Shares	854,980	3,010,980
Options exercisable at end of period, Shares	854,980	3,010,980
Outstanding at beginning of period, Weighted Average Exercise Price	$ 1.51	$ 1.51
Granted, Weighted Average Exercise Price
Exercised, Weighted Average Exercise Price
Forfeited and expired, Weighted Average Exercise Price	$ 1.17
Outstanding at end of period, Weighted Average Exercise Price	$ 2.31	$ 1.51
Options exercisable at end of period, Weighted Average Exercise Price	$ 2.31	$ 1.51