Fair Value of Financial Assets and Liabilities (Details 1)	3 Months Ended	12 Months Ended
	Mar. 31, 2019 Number	Dec. 31, 2018
Risk Free Interest Rate [Member]
Measurement input	0.0227	0.0248
Price Volatility [Member] | Minimum [Member]
Measurement input	100.00	0.7203
Price Volatility [Member] | Maximum [Member]
Measurement input	1.0305	1.0313
Expected Term [Member] | Minimum [Member]
Expected life (in years)	1 year 8 months 8 days	1 year 11 months 8 days
Expected Term [Member] | Maximum [Member]
Expected life (in years)	1 year 9 months 22 days	2 years 22 days