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Fair Value Measurements (Detail 1)
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Fair Value Of Derivative Liability [Line Items]    
Expected volatility 65.00% 60.00%
Risk free rate 0.86% 1.31%
Dividend yield 0.00% 0.00%
Expected term (in years) 2 years 9 months 26 days 3 years 26 days