Stock-Based Compensation (Details 1) (Stock Option [Member], USD $)	6 Months Ended	12 Months Ended
	Jun. 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	1,732,500	222,500
Options, Exercised	(6,583)	(291,666)
Options, Forfeited	(304,391)	(475,000)
Options, Ending Balance	5,331,106	3,909,580	4,453,746
Options, Exercisable	3,340,280
Weighted Average Exercise Price, Beginning Balance	$ 1.78	$ 1.78
Weighted Average Exercise Price, Granted	$ 2.63	$ 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	$ 2.05	$ 1.78	$ 1.78
Weighted Average Exercise Price, Exercisable	$ 1.77
Weighted Average Remaining Contractual Life, Balance Outstanding	6 years 3 months 4 days	5 years 7 months 2 days	6 years 5 months 5 days
Weighted Average Remaining Contractual Life, Exercisable	5 years 4 months 10 days
Aggregate Intrinsic Value, Beginning Balance	$ 785,000	$ 1,308,000
Aggregate Intrinsic Value, Ending Balance	920,000	785,000	1,308,000
Aggregate Intrinsic Value, Exercisable	919,000
Grant date fair value of options granted	$ 4,088,000	$ 350,000
Weighted average grant date fair value	$ 2.36	$ 1.57