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Warrant Liability (Details 4) (USD $)	Jun. 30, 2012	Mar. 31, 2012
Summary of outstanding warrants and fair value of warrant liability
Number Outstanding	12,134,483
Fair value	$ 5,396,170
Series A Warrant [Member]
Summary of outstanding warrants and fair value of warrant liability
Number Outstanding	10,700,000	8,900,000
Exercise Price	$ 1.40
Fair value	5,390,018
Series B Warrant [Member]
Summary of outstanding warrants and fair value of warrant liability
Number Outstanding		7,100,000
Warrants issued in 2008 [Member]
Summary of outstanding warrants and fair value of warrant liability
Number Outstanding	1,034,483
Exercise Price	$ 23.00
Fair value	1,552
Warrants issued in 2009 [Member]
Summary of outstanding warrants and fair value of warrant liability
Number Outstanding	400,000
Exercise Price	$ 15.00
Fair value	$ 4,600