Summary of Significant Accounting Policies (Dilutive Securities) (Details) - shares	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Number of potentially dilutive securities
Number of potentially dilutive securities (shares)	3,070,435	3,131,524	3,294,501
Common stock options
Number of potentially dilutive securities
Number of potentially dilutive securities (shares)	2,017,046	2,426,836	2,716,317
Restricted shares
Number of potentially dilutive securities
Number of potentially dilutive securities (shares)	1,053,389	704,688	539,204
Common stock warrants
Number of potentially dilutive securities
Number of potentially dilutive securities (shares)	0	0	38,980