Stockholders' Equity (Details 2) (Warrants, USD $)	6 Months Ended
	Jun. 30, 2014
Minimum [Member]
Exercise price	$ 1.94
Expected stock price volatility	78.90%
Risk-free interest rate	0.76%
Expected Term (years)	2 years 6 months
Maximum [Member]
Exercise price	$ 5.83
Expected stock price volatility	90.60%
Risk-free interest rate	1.71%
Expected Term (years)	5 years 5 months