Warrants and Derivative Liabilities (Details 5) - Pricing Model - Series B warrant
|
Sep. 30, 2019
Percent
$ / shares
|
Dec. 31, 2018
Percent
USD_per_warrants
$ / shares
|
Dec. 31, 2017
Percent
$ / shares
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Expected Term |
|
|
3 months
|
| Underlying common stock price | $ / shares |
$ 0.37
|
$ 0.40
|
$ 0.15
|
| Dividend yield |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Warrants and rights outstanding measurement input |
0.00
|
0.00
|
0.00
|
| Volatility factor |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Warrants and rights outstanding measurement input |
79.4
|
93.00
|
70.00
|
| Risk-free interest rate |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Warrants and rights outstanding measurement input |
1.75
|
2.79
|
1.39
|
| Risk-free interest rate | Minimum |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Warrants and rights outstanding measurement input | USD_per_warrants |
|
2.786
|
|
| Risk-free interest rate | Maximum |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Warrants and rights outstanding measurement input | USD_per_warrants |
|
2.789
|
|
| Expected term (years) |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Expected Term |
10 months 21 days
|
|
|
| Expected term (years) | Minimum |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Expected Term |
|
1 year 7 months 21 days
|
|
| Expected term (years) | Maximum |
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
| Expected Term |
|
1 year 7 months 24 days
|
|