(3) Union Capital Financing (Detail) - (Table 3) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2012	Mar. 31, 2012	Sep. 30, 2011	Mar. 31, 2011
Total [Member]
Balances at,	$ 6,049,933	$ 4,257,599	$ 6,049,933	$ 4,257,599	$ 6,659,499	$ 5,574,666	$ 7,212,156	$ 7,345,500
Fair value adjustments	(755,319)	(587,680)	53,192	(1,017,947)
Accretion	145,753	133,123	422,075	430,046
		(2,500,000)		(2,500,000)
Senior Notes Fair value Level 3 [Member]
Balances at,							2,500,000	2,500,000
		(2,500,000)		(2,500,000)
Warrants Fair Value Level 3 [Member]
Balances at,	3,058,511	1,824,468	3,058,511	1,824,468	3,813,830	3,005,319	2,409,574	2,837,143
Fair value adjustments	(755,319)	(585,106)	53,192	(1,012,675)
Put Derivative Fair Value Level 3 [Member]
Balances at,							2,574	5,272
Fair value adjustments		(2,574)		(5,272)
Series D Preferred Stock Fair Value Level 3 [Member]
Balances at,	2,991,422	2,433,131	2,991,422	2,433,131	2,845,669	2,569,347	2,300,008	2,003,085
Accretion	$ 145,753	$ 133,123	$ 422,075	$ 430,046