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Fair Value Measurements (Details 2)
3 Months Ended
Mar. 31, 2016
$ / shares
Quantitative Information One [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Strike price $ 3.49
Volatility (annual) 86.90%
Risk-free rate 1.30%
Contractual term (years) 3 years 1 month 6 days
Dividend yield (per share) 0.00%
Quantitative Information Two [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Strike price $ 2.38
Volatility (annual) 85.90%
Risk-free rate 0.90%
Contractual term (years) 3 years
Dividend yield (per share) 0.00%