Warrants (Details 2) - Warrant [Member]	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Assumption used to value warrants using black scholes pricing model
Number of Shares Underlying Warrants Granted | shares	1,333,185
Series B January 27, 2014 [Member]
Assumption used to value warrants using black scholes pricing model
Number of Shares Underlying Warrants Granted | shares	157,846
Stock Price on Measurement Date	$ 7.00
Exercise price	$ 45.00
Expected Term	5 years
Expected Volatility	150.00%
Dividend Yield	0.00%
Risk Free Rate	1.61%
Series C November 19, 2014 [Member]
Assumption used to value warrants using black scholes pricing model
Number of Shares Underlying Warrants Granted | shares	145,399
Stock Price on Measurement Date	$ 9.37
Exercise price	$ 12.00
Expected Term	5 years 6 months
Expected Volatility	94.60%
Dividend Yield	0.00%
Risk Free Rate	1.64%
Repricing Series C May 18, 2015 [Member]
Assumption used to value warrants using black scholes pricing model
Number of Shares Underlying Warrants Granted | shares	142,957
Stock Price on Measurement Date	$ 5.95
Exercise price	$ 9.00
Expected Term	5 years
Expected Volatility	96.34%
Dividend Yield	0.00%
Risk Free Rate	1.46%
Repricing Series E May 18, 2015 [Member]
Assumption used to value warrants using black scholes pricing model
Number of Shares Underlying Warrants Granted | shares	142,957
Stock Price on Measurement Date	$ 5.95
Exercise price	$ 9.00
Expected Term	7 years
Expected Volatility	96.34%
Dividend Yield	0.00%
Risk Free Rate	1.87%
Rens Technology March 3, 2016 [Member]
Assumption used to value warrants using black scholes pricing model
Number of Shares Underlying Warrants Granted | shares	375,000
Stock Price on Measurement Date	$ 7.00
Exercise price	$ 7.00
Expected Term	4 years
Expected Volatility	96.34%
Dividend Yield	0.00%
Risk Free Rate	1.87%