Stock-Based Compensation (Details 1) (Stock Option [Member], USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Beginning Balance	3,909,580	4,453,746
Options, Granted	2,187,500	222,500
Options, Exercised	(6,583)	(291,666)
Options, Forfeited	(304,391)	(475,000)
Options, Ending Balance	5,786,106	3,909,580	4,453,746
Options, Exercisable	3,597,772
Weighted Average Exercise Price, Beginning Balance	$ 1.78	$ 1.78
Weighted Average Exercise Price, Granted	$ 2.44	$ 1.69
Weighted Average Exercise Price, Exercised	$ 0.58	$ 0.79
Weighted Average Exercise Price, Forfeited	$ 1.93	$ 2.30
Weighted Average Exercise Price, Ending Balance	$ 2.03	$ 1.78	$ 1.78
Weighted Average Exercise Price, Exercisable	$ 1.81
Weighted Average Remaining Contractual Life, Balance Outstanding	5 years 11 months 1 day	5 years 7 months 2 days	6 years 5 months 5 days
Weighted Average Remaining Contractual Life, Exercisable	5 years 3 months 4 days
Aggregate Intrinsic Value, Outstanding	$ 1,027,000	$ 785,000	$ 1,308,000
Aggregate Intrinsic Value, Exercisable	996,000
Grant date fair value of options granted	$ 4,679,000	$ 350,000
Weighted average grant date fair value	$ 2.14	$ 1.57