Fair Value of Financial Instruments (Schedule of assumptions used to calculate fair value liabilities) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Warrants To Purchase Common Stock [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Volatility (as a percent)	65.00%
Stock Price (in dollars per share)	$ 7.33
Dividend Yield (as a percent)	0.00%
Warrants To Purchase Common Stock [Member] | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Exercise Price (in dollars per share)	$ 4
Term	7 years 3 months 18 days
Risk-Free Rate (as a percent)	2.20%
Warrants To Purchase Common Stock [Member] | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Exercise Price (in dollars per share)	$ 5
Term	8 years 3 months 18 days
Risk-Free Rate (as a percent)	2.40%
Interest Make-Whole Liability [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Volatility (as a percent)	45.00%
Stock Price (in dollars per share)	$ 7.33
Credit spread (as a percent)	1299.00%
Term	4 years
Dividend Yield (as a percent)	0.00%