6. ADDITIONAL PAID-IN CAPITAL (Details)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Risk free interest rate (min)	1.00%	0.93%
Risk free interest rate (max)	1.10%	0.99%
Expected volatility (min)	73.40%	74.70%
Expected volatility (max)	79.70%	79.10%
Expected dividend yield	0.00%	0.00%
Expected term in years	3 years 4 months 22 days
Estimated forfeiture rate	3.4% - 3.6%	3.7%
Minimum
Expected term in years		3 years 3 months
Maximum
Expected term in years		3 years 3 months 11 days