Consolidated Condensed Statement of Mandatorily Redeemable Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) (USD $)	Series A Mandatorily Redeemable Preferred Stock Shares	Series A Mandatorily Redeemable Preferred Stock Amount USD ($)	Common Stock Shares	Common Stock Amount USD ($)	Additional Paid-In Capital USD ($)	Series C Preferred Shares	Series C Preferred Amount and APIC USD ($)	Accumulated Deficit USD ($)	Accumulated Other Comprehensive Income (Loss) USD ($)	Total USD ($)
Balance at May. 31, 2012	1,549	1,841,555	270,352,831	27,035	3,664,923	6,805	10,330,112	(23,281,717)	148,375	(9,111,272)
Issuance of common stock as compensation for services	0	0	22,600,000	2,260	57,630	0	0	0	0	59,890
Issuance of common stock as additional consideration for financing arrangements	0	0	17,895,072	1,790	203,930	0	0	0	0	205,720
Accrued dividends of Series A mandatorily redeemable convertible preferred stock		$ 56,058		$ 0	$ 0		$ 0	$ (56,058)	$ 0	$ (56,058)
Accrued dividends of Series C equity preferred stock		0		0	0		682,826	(682,826)	0	0
Accrual of common shares to be issued in connection with financing arrangements		0		0	35,255		0	0	0	35,255
Unrealized net loss on available for sale securities		0		0	0		0	0	(20,040)	(20,040)
Net loss, nine month period ended February 28, 2013		0		0	0		0	(1,550,108)	0	(1,550,108)
Balance at Feb. 28, 2013	1,549	1,897,613	310,847,903	31,085	3,961,738	6,805	11,012,938	(25,570,709)	128,335	(10,436,613)
Balance at Nov. 30, 2012	1,549	1,878,672	308,154,805	30,816	3,923,638	6,805	10,779,959	(24,854,590)	197,018	(9,923,159)
Issuance of common stock as additional consideration for financing arrangements,	0	0	2,693,098	269	12,268	0	0	0	0	12,537
Accrued dividends of Series A mandatorily redeemable convertible preferred stock,		18,941		0	0		0	(18,941)	0	(18,941)
Accrued dividends of Series C equity preferred stock,		0		0	0		232,979	(232,979)	0	0
Accrual of common shares to be issued in connection with financing arrangements,		0		0	25,832		0	0	0	25,832
Unrealized net loss on available for sale securities,		0		0	0		0	0	(68,683)	(68,683)
Net loss, three month period ended February 28, 2013		$ 0		$ 0	$ 0		$ 0	$ (464,199)	$ 0	$ (464,199)
Balance at Feb. 28, 2013	1,549	1,897,613	310,847,903	31,085	3,961,738	6,805	11,012,938	(25,570,709)	128,335	(10,436,613)