Warrants - Schedule of Fair Value of Warrants Classified as Liabilities (Details) - $ / shares |
12 Months Ended | |
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Dec. 31, 2017 |
Dec. 31, 2016 |
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| Risk-free rate % | 0.00% | |
| October 2013 Warrants [Member] | ||
| Strike price | $ 15.00 | $ 15.00 |
| Expected term (years) | 5 years 9 months 18 days | 6 years 9 months 18 days |
| Cumulative volatility % | 86.70% | 99.70% |
| Risk-free rate % | 2.30% | 2.24% |
| January 2015 Warrants [Member] | ||
| Strike price | $ 15.00 | $ 15.00 |
| Expected term (years) | 6 years | 7 years |
| Cumulative volatility % | 87.70% | 100.00% |
| Risk-free rate % | 2.31% | 2.25% |
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- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average expected volatility of stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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