Summary of Share Based Compensation Option Unvested (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Shares - Unvested
Granted	8,000
Forfeited	131,500
Weighted Average Grant-Date Fair Value
Granted	$ 2.82	$ 1.28
Unvested Stock Options
Shares - Unvested
Beginning Balance	8,000
Granted	8,000
Vested	(8,000)
Forfeited
Ending Balance	8,000
Weighted Average Grant-Date Fair Value
Beginning Balance	$ 1.28
Granted	$ 2.82
Vested	$ 1.28
Forfeited
Ending Balance	$ 2.82