Stock-Based Compensation (Details 1) (Stock Option [Member], USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Beginning Balance	5,981,106	3,909,580
Options, Granted	550,000	2,382,500
Options, Exercised	0	(6,583)
Options, Forfeited	0	(304,391)
Options, Ending Balance	6,531,106	5,981,106	3,909,580
Options, Exercisable	4,168,043
Weighted Average Exercise Price, Beginning Balance	$ 2.01	$ 1.78
Weighted Average Exercise Price, Granted	$ 1.54	$ 2.36
Weighted Average Exercise Price, Exercised	$ 0	$ 0.58
Weighted Average Exercise Price, Forfeited	$ 0	$ 1.93
Weighted Average Exercise Price, Ending Balance	$ 1.97	$ 2.01	$ 1.78
Weighted Average Exercise Price, Exercisable	$ 1.89
Weighted Average Remaining Contractual Life, Balance Outstanding	5 years 9 months 14 days	5 years 9 months 18 days	5 years 7 months 2 days
Weighted Average Remaining Contractual Life, Exercisable	4 years 11 months 23 days
Aggregate Intrinsic Value, Beginning Balance	$ 685,000	$ 785,000
Aggregate Intrinsic Value, Ending Balance	2,628,000	685,000	785,000
Aggregate Intrinsic Value, Exercisable	1,939,000
Grant date fair value of options granted	$ 817,000	$ 4,974,000
Weighted average grant date fair value	$ 1.49	$ 2.09