Derivatives (Details 1) - $ / shares |
6 Months Ended | 12 Months Ended | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2017 |
Dec. 31, 2016 |
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Summary of fair values of derivative warrants on basis of valuation model | |||||||||||||||
Expected dividend yield | 0.00% | ||||||||||||||
Minimum [Member] | |||||||||||||||
Summary of fair values of derivative warrants on basis of valuation model | |||||||||||||||
Warrant lives in years | 3 months | ||||||||||||||
Expected volatility | 45.72% | ||||||||||||||
Maximum [Member] | |||||||||||||||
Summary of fair values of derivative warrants on basis of valuation model | |||||||||||||||
Warrant lives in years | 8 years 10 months 25 days | ||||||||||||||
Expected volatility | 79.81% | ||||||||||||||
Derivative warrants [Member] | |||||||||||||||
Summary of fair values of derivative warrants on basis of valuation model | |||||||||||||||
Market value of common stock on measurement date | [1] | $ 1.22 | $ 0.88 | ||||||||||||
Adjusted exercise price | $ 2.34 | $ 2.34 | |||||||||||||
Risk free interest rate | [2] | 0.85% | |||||||||||||
Warrant lives in years | 2 years | ||||||||||||||
Expected dividend yield | [3] | ||||||||||||||
Probability of stock offering in any period over 5 years | [4] | 100.00% | 100.00% | ||||||||||||
Offering price | [5] | $ 0.75 | $ 1.25 | ||||||||||||
Derivative warrants [Member] | Minimum [Member] | |||||||||||||||
Summary of fair values of derivative warrants on basis of valuation model | |||||||||||||||
Risk free interest rate | [2] | 1.14% | |||||||||||||
Warrant lives in years | 2 years | ||||||||||||||
Expected volatility | [6] | 73.00% | 61.00% | ||||||||||||
Derivative warrants [Member] | Maximum [Member] | |||||||||||||||
Summary of fair values of derivative warrants on basis of valuation model | |||||||||||||||
Risk free interest rate | [2] | 1.81% | |||||||||||||
Warrant lives in years | 4 years 7 months 6 days | ||||||||||||||
Expected volatility | [6] | 82.00% | 69.00% | ||||||||||||
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