Stock Purchase Warrants (Details 1) (Warrant [Member], USD $)	3 Months Ended
	Mar. 31, 2014
Exercise Price 1.32 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	$ 1.32
Warrants Outstanding	18,182
Warrants Exercisable	18,182
Weighted Average Remaining Contractual Life	1 year 9 months
Aggregate Intrinsic value	$ 23,000
Exercise Price 1.60 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	$ 1.60
Warrants Outstanding	316,522
Warrants Exercisable	316,522
Weighted Average Remaining Contractual Life	3 years 6 months 25 days
Aggregate Intrinsic value	307,000
Exercise Price 2.22 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	$ 2.22
Warrants Outstanding	517,257
Warrants Exercisable	517,257
Weighted Average Remaining Contractual Life	2 years 7 months 28 days
Aggregate Intrinsic value	181,000
Exercise Price 3.30 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	$ 3.30
Warrants Outstanding	61,207
Warrants Exercisable	61,207
Weighted Average Remaining Contractual Life	1 year 1 month 28 days
Aggregate Intrinsic value	0
Exercise Price 3.75 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	$ 3.75
Warrants Outstanding	50,000
Warrants Exercisable	50,000
Weighted Average Remaining Contractual Life	1 year 10 months 17 days
Aggregate Intrinsic value	0
Exercise Price 2.15 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	$ 2.15
Warrants Outstanding	963,168
Warrants Exercisable	963,168
Weighted Average Remaining Contractual Life	2 years 9 months 22 days
Aggregate Intrinsic value	$ 511,000