Fair Value Measurements - Valuation Technique (Details) - Derivative Liabilities	3 Months Ended
	Mar. 31, 2019 $ / shares
Risk free interest rate
Valuation technique for assets and liabilities measured and recorded at fair value
Derivative Liability, Measurement Input	2.51
Volatility
Valuation technique for assets and liabilities measured and recorded at fair value
Derivative Liability, Measurement Input	74.93
Expected average term
Valuation technique for assets and liabilities measured and recorded at fair value
Derivative Liability, Expected average term	6 months 11 days
Expected dividend yield
Valuation technique for assets and liabilities measured and recorded at fair value
Equity Instrument, Measurement Input	0