(7) Derivative Financial Instruments (Detail) - (Table 1) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Warrant Derivative
Beginning Balance	$ 3,005,319	$ 2,837,143
Fair value adjustments	1,659,575	168,176
Ending Balance	4,664,894	3,005,319
Put Derivative
Beginning Balance		5,272
Fair value adjustments		(5,272)
Ending Balance
Total
Beginning Balance	3,005,319	2,842,415
Fair value adjustments	1,659,575	162,904
Ending Balance	$ 4,664,894	$ 3,005,319