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Warrants (Tables)
12 Months Ended
Dec. 31, 2017
Warrants [Abstract]  
Schedule of range of inputs used for probability weighted Black Scholes option pricing model valuations
Issuance Date Expected Term at Issuance Date Risk Free Interest Rate at Date of Issuance Volatility at Date of Issuance Stock Price at Date of Issuance
8/20/2014 5.00 1.50% 96.00% $0.63
2/13/2015 5.00 1.28% 100.00% $0.34
5/22/2015 5.00 1.28% 107.58% $0.29
10/15/2015 5.00 1.71% 58.48% $0.22
10/26/2015 5.00 1.71% 60.47% $0.21
12/21/2015 5.00 1.75% 58.48% $0.21
12/28/2015 5.00 1.75% 58.48% $0.16
1/15/2016 5.00 1.76% 58.48% $0.17
5/3/2016 5.00 1.25% 51.15% $0.21
6/13/2016 5.00 1.14% 51.12% $0.17
6/29/2016 5.00 1.01% 48.84% $0.17
8/17/2016 5.00 1.15% 51.55% $0.15
11/4/2016 5.00 1.66% 47.48% $0.16
12/12/2016 5.00 1.90% 48.54% $0.19
8/19/2017 5.00 1.81% 64.71% $0.35
11/13/2017 5.00 2.08% 66.24% $0.29

 

Remaining Expected Term at
December 31,
2017
 Risk Free Interest Rate at
December 31,
2017
 Volatility at
December 31,
2017
 Stock Price at
December 31,
2017
1.64 - 4.87 1.83% 72.34% $0.32

 

Summary of outstanding debt and equity warrants
  Warrants (Equity)     Warrants (Liability)    
  Amount  Weighted Average Exercise Price  Weighted Average Remaining Contractual Life  Amount  Weighted Average Exercise Price  Weighted Average Remaining Contractual Life 
Balance, January 1, 2016  12,937,902   1.88   3.90   6,487,500   0.35   3.64 
Warrants issued to financial advisors  500,000   0.28   4.46   -   -   - 
Warrants issued with promissory notes  1,785,715   0.28   4.37   -   -   - 
Warrants issued with term loan  7,424,804   0.28   4.70   -   -   - 
Warrants expired  (1,116,359)   11.52   -   -   -   - 
Balance, December 31, 2016  21,532,062   0.65   3.79   6,487,500   0.35   2.64 
Warrants issued with term loan  11,764,704   0.28   4.75   -   -   - 
Warrants expired  (292,755)  46.68   -   -   -   - 
Balance December 31, 2017  33,004,011   0.47   3.55   6,487,500   0.35   1.64