Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Details 2)

v3.5.0.2
STOCK-BASED COMPENSATION (Details 2)
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Expected dividend yield 0.00% 0.00%
Minimum [Member]    
Risk-free interest rate 0.85% 1.47%
Expected term of option 6 years 6 years
Expected stock price volatility 73.46% 85.05%
Maximum [Member]    
Risk-free interest rate 1.86% 2.35%
Expected term of option 9 years 22 days 9 years 10 months 28 days
Expected stock price volatility 81.59% 92.13%