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Summary of Significant Accounting Policies (Details 1) | Mar. 31, 2013 | Mar. 31, 2012
--- | --- | ---
Outstanding options, warrants and restricted stock units |  |
Total | 11,282,286 | 19,849,191
Options [Member] |  |
Outstanding options, warrants and restricted stock units |  |
Total | 443,926 | 872,032
Restricted stock units [Member] |  |
Outstanding options, warrants and restricted stock units |  |
Total | 1,236,982 | 1,542,676
Warrants [Member] |  |
Outstanding options, warrants and restricted stock units |  |
Total | 9,601,378 | 17,434,483

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