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Net Loss per Common Share (Details) (Options and Unvested Restricted Stock [Member], USD $)
6 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Options and Unvested Restricted Stock [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Number of anti-dilutive shares excluded from computation of diluted loss per common share (in shares) 1,506,739 1,802,564
Range of exercise prices - lower range limit (in dollars per share) $ 2.06 $ 0.77
Range of exercise prices - upper range limit (in dollars per share) $ 2.50 $ 3.25