Stockholders' Equity and Convertible Preferred Stock (Details 2) - Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Exercise price		$ 1.02
Expected stock price volatility		134.50%
Risk-free rate of interest		1.40%
Term (years)		4 years 5 months 1 day
Minimum [Member]
Exercise price	$ 1.04
Expected stock price volatility	131.80%
Risk-free rate of interest	2.65%
Term (years)	9 years 1 month 17 days
Maximum [Member]
Exercise price	$ 1.50
Expected stock price volatility	132.20%
Risk-free rate of interest	2.80%
Term (years)	9 years 4 months 2 days