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Stock-based Compensation - Summary of Grant-date Fair Value of Stock Options Granted Assumptions (Details) - $ / shares
6 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Grant-date fair value $ 5.59
Volatility factor 76.23%
Dividend yield
Risk-free interest rate 2.52%
Expected term (in years) 0 years 10 years