v3.7.0.1
Stock-Based Compensation - Summarizes Activity Pertaining to Unvested Options (Details) - $ / shares
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Shares, Unvested at beginning of the year 5,576,273 4,924,055 5,662,560
Shares, Granted 3,280,000 2,622,500 2,525,000
Shares, Canceled or expired (138,250) (12,000) (954,083)
Shares, Vested (2,171,648) (1,958,282) (2,309,422)
Shares, Unvested at end of the year 6,546,375 5,576,273 4,924,055
Weighted Average Exercise Price, Unvested at beginning of the year $ 1.17 $ 0.70 $ 0.32
Weighted Average Exercise Price, Granted 0.91 1.63 1.04
Weighted Average Exercise Price, Canceled or expired 0.55 0.97 0.44
Weighted Average Exercise Price, Vested 0.94 0.70 0.41
Weighted Average Exercise Price, Unvested at end of the year $ 1.11 $ 1.17 $ 0.70