Fair Value - Schedule of Assumptions to Estimate Fair Value of Warrants (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
August 2016 Warrants [Member]
Underlying price per share	$ 0.32	$ 0.35
August 2016 Warrants [Member] | Measurement Input, Exercise Price [Member]
Fair value measurement, input per share	$ 1.88	$ 1.88
August 2016 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair value measurement, input Percentage	2.64%	2.05%
August 2016 Warrants [Member] | Measurement Input, Expected Term [Member]
Fair value measurement, input term	3 years 2 months 5 days	3 years 8 months 12 days
August 2016 Warrants [Member] | Measurement Input, Price Volatility [Member]
Fair value measurement, input Percentage	70.00%	65.00%
August 2016 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]
Fair value measurement, input Percentage	0.00%	0.00%
February 2017 Warrants [Member]
Underlying price per share	$ 0.32	$ 0.35
February 2017 Warrants [Member] | Measurement Input, Exercise Price [Member] | Minimum [Member]
Fair value measurement, input per share	0.69	0.69
February 2017 Warrants [Member] | Measurement Input, Exercise Price [Member] | Maximum [Member]
Fair value measurement, input per share	$ 0.75	$ 0.75
February 2017 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair value measurement, input Percentage	2.69%	2.10%
February 2017 Warrants [Member] | Measurement Input, Expected Term [Member]
Fair value measurement, input term		4 years 1 month 6 days
February 2017 Warrants [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]
Fair value measurement, input term	4 years 1 month 2 days
February 2017 Warrants [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]
Fair value measurement, input term	4 years 1 month 6 days
February 2017 Warrants [Member] | Measurement Input, Price Volatility [Member]
Fair value measurement, input Percentage	70.00%	65.00%
February 2017 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]
Fair value measurement, input Percentage	0.00%	0.00%
June 2017 Warrants [Member]
Underlying price per share	$ 0.32	$ 0.35
June 2017 Warrants [Member] | Measurement Input, Exercise Price [Member]
Fair value measurement, input per share	$ 0.63	$ 0.63
June 2017 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair value measurement, input Percentage	2.68%	2.14%
June 2017 Warrants [Member] | Measurement Input, Expected Term [Member]
Fair value measurement, input term	3 years 11 months 1 day	4 years 4 months 24 days
June 2017 Warrants [Member] | Measurement Input, Price Volatility [Member]
Fair value measurement, input Percentage	70.00%	65.00%
June 2017 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]
Fair value measurement, input Percentage	0.00%	0.00%
August 2017 Warrants [Member]
Underlying price per share	$ 0.32	$ 0.35
August 2017 Warrants [Member] | Measurement Input, Exercise Price [Member]
Fair value measurement, input per share	$ 0.45	$ 0.45
August 2017 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair value measurement, input Percentage	2.66%
August 2017 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]
Fair value measurement, input Percentage		1.33%
August 2017 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]
Fair value measurement, input Percentage		2.11%
August 2017 Warrants [Member] | Measurement Input, Expected Term [Member]
Fair value measurement, input term	3 years 8 months 5 days
August 2017 Warrants [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]
Fair value measurement, input term		2 months 12 days
August 2017 Warrants [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]
Fair value measurement, input term		4 years 2 months 12 days
August 2017 Warrants [Member] | Measurement Input, Price Volatility [Member]
Fair value measurement, input Percentage	70.00%	65.00%
August 2017 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]
Fair value measurement, input Percentage	0.00%	0.00%
April 2018 Warrants [Member]
Underlying price per share	$ 0.32	$ 0.34
April 2018 Warrants [Member] | Measurement Input, Exercise Price [Member]
Fair value measurement, input per share	$ 0.39	$ 0.39
April 2018 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]
Fair value measurement, input Percentage	2.56%	2.56%
April 2018 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]
Fair value measurement, input Percentage	2.74%	2.86%
April 2018 Warrants [Member] | Measurement Input, Expected Term [Member] | Minimum [Member]
Fair value measurement, input term	2 years 3 months 26 days	5 years 6 months
April 2018 Warrants [Member] | Measurement Input, Expected Term [Member] | Maximum [Member]
Fair value measurement, input term	5 years 3 months 26 days	2 years 6 months
April 2018 Warrants [Member] | Measurement Input, Price Volatility [Member]
Fair value measurement, input Percentage	70.00%	70.00%
April 2018 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]
Fair value measurement, input Percentage	0.00%	0.00%