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Stock-Based Compensation (Details 1)
11 Months Ended 12 Months Ended
Dec. 31, 2013
Jan. 31, 2013
Jan. 31, 2012
Stock-Based Compensation [Abstract]      
Risk-free interest rate 0.78% 1.10% 2.61%
Expected volatility 74.10% 74.10% 72.40%
Expected dividend yield 0.00% 0.00% 0.00%
Expected term (in years) 5 years 6 months 5 years 6 months 5 years 6 months