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Stock Purchase Warrants (Details 3) - Jun. 30, 2015 - USD ($)
Total
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 2 years 3 months 25 days
Aggregate Intrinsic value $ 396,000
Exercise Price 1.75 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise Price $ 1.75
Warrants Outstanding 7,029.808
Warrants Exercisable 7,029,808
Weighted Average Remaining Contractual Life 4 years 3 months 11 days
Aggregate Intrinsic value $ 7,732,000
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 1 year 4 months 28 days
Aggregate Intrinsic value $ 326,000
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 7 months 17 days
Aggregate Intrinsic value $ 0
Exercise Price 1.79 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise Price $ 1.79
Warrants Outstanding 7,913,587
Warrants Exercisable 7,913,587
Weighted Average Remaining Contractual Life 3 years 11 months 26 days
Aggregate Intrinsic value $ 8,454,000