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Fair Value Measurements - Schedule of Fair Value of Warrants (Details) | 12 Months Ended
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Dec. 31, 2017
November 2017 Warrants [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Expected volatility (in hundredths) | 217.39%
Risk free interest rates (in hundredths) | 1.98%
Expected life (in years) | 4 years 10 months 17 days
October 2016 Warrants [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Expected volatility (in hundredths) | 130.88%
Risk free interest rates (in hundredths) | 2.06%
Expected life (in years) | 3 years 9 months 3 days
July 2015 Series A Warrants [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Expected volatility (in hundredths) | 161.87%
Risk free interest rates (in hundredths) | 1.94%
Expected life (in years) | 2 years 6 months 21 days
February 2015 Warrants [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Expected volatility (in hundredths) | 169.95%
Risk free interest rates (in hundredths) | 1.90%
Expected life (in years) | 2 years 1 month 17 days
October 2013 Warrants [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Expected volatility (in hundredths) | 266.92%
Risk free interest rates (in hundredths) | 1.68%
Expected life (in years) | 9 months 25 days

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