Black-Scholes option valuation model (Details) (USD $)	Aug. 31, 2013	Jul. 09, 2013
Black-Scholes option valuation model:
Stock Price	$ 1.77	$ 2.11
Exercise Price	$ 1.00	$ 1.00
Expected Life (in years)	6.86	7.00
Stock Volatility	138.00%	138.00%
Risk-Free Interest Rate	2.24%	2.28%
Dividend Rate	0.00%	0.00%