Annual report pursuant to Section 13 and 15(d)

Warrant liability (Details)

v3.7.0.1
Warrant liability (Details) - Investor Warrants [Member]
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Expected volatility 56.79% 79.85%
Risk-free interest rate 0.53% 0.56%
Expected term (in years) 3 months 18 days 1 year 3 months 18 days
Dividend rate 0.00% 0.00%