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Stock-Based Compensation (Details 2)
$ in Thousands
6 Months Ended
Jun. 30, 2016
USD ($)
shares
Exercise Price $0.53 [Member]  
Number Outstanding 291,900
Average Remaining Contractual Life (Years) 4 years
Number Exercisable 291,900
Intrinsic Value | $ $ 67,137
Exercise Price $0.53 [Member]  
Number Outstanding 291,900
Average Remaining Contractual Life (Years) 6 years
Number Exercisable 291,900
Intrinsic Value | $ $ 67,137
Exercise Price $0.53 [Member]  
Number Outstanding 291,900
Average Remaining Contractual Life (Years) 9 years 3 months
Number Exercisable
Intrinsic Value | $
Exercise Price $4.54 [Member]  
Number Outstanding 380,000
Average Remaining Contractual Life (Years) 7 years 6 months
Number Exercisable
Intrinsic Value | $
Exercise Price $1.09 [Member]  
Number Outstanding 564,000
Average Remaining Contractual Life (Years) 9 years
Number Exercisable
Intrinsic Value | $