Assumptions Used In Binomial Valuation Model and Black-Scholes Valuation Model (Detail)	12 Months Ended	6 Months Ended
	Dec. 31, 2009	Jun. 30, 2014 Black Scholes Option Pricing Model	Jun. 30, 2013 Black Scholes Option Pricing Model
Class of Warrant or Right [Line Items]
Risk-free interest rate	2.14%	0.06%	0.26%
Expected life in years	5 years	5 months 9 days	1 year 5 months 9 days
Expected volatility	105.00%	70.00%	70.00%
Expected dividend yield	0.00%	0.00%	0.00%
Steps Per Year		54	12