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Weighted average assumptions were used to estimate the fair value of stock options using the Black-Scholes option pricing model: (Details)
3 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Weighted average assumptions were used to estimate the fair value of stock options using the Black-Scholes option pricing model:    
Risk-free interest rate Minimum 0.62% 0.90%
Risk-free interest rate Maximum 0.72% 0.96%
Expected dividend yield 0 0
Expected term minimum in years 3.25 5.5
Expected term maximum in years 5.5 0.0000
Forfeiture rate 0.00% 0.00%
Expected volatility Minimum 244.90% 122.33%
Expected volatility maximum 262.52% 124.91%