v2.4.1.9
Weighted average assumptions were used to estimate the fair value of stock options using the Black-Scholes option pricing model: (Details)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
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%fil_RiskFreeInterestRateMinimum 0.90%fil_RiskFreeInterestRateMinimum
Risk-free interest rate Maximum 0.72%fil_RiskFreeInterestRateMaximum 0.96%fil_RiskFreeInterestRateMaximum
Expected dividend yield 0fil_ExpectedDividendYield 0fil_ExpectedDividendYield
Expected term minimum in years 3.25fil_ExpectedTermMinimumInYears 5.5fil_ExpectedTermMinimumInYears
Expected term maximum in years 5.5fil_ExpectedTermMaximumInYears 0fil_ExpectedTermMaximumInYears
Forfeiture rate 0.00%fil_ForfeitureRate 0.00%fil_ForfeitureRate
Expected volatility Minimum 244.90%fil_Expectedvolatilityminimum31 122.33%fil_Expectedvolatilityminimum31
Expected volatility maximum 262.52%fil_Expectedvolatilitymaximum31 124.91%fil_Expectedvolatilitymaximum31