Consolidated Statement of Series A Redeemable Preferred Stock and Stockholders' Equity (Deficit) - USD ($)	Series A Mandatorily Redeemable Preferred Stock	Common Stock Amount	Additional Paid-In Capital	Series C Preferred Stock [Member]	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total
Beginning Balance at May. 31, 2012	$ 1,841,555	$ 27,035	$ 3,664,923	$ 10,330,112	$ (23,281,717)	$ 148,375	$ (9,111,272)
Beginning Balance, Shares at May. 31, 2012	1,549	270,352,831		6,805
Issuance of common stock as compensation for services		$ 2,265	57,869				60,134
Issuance of common stock as additional consideration in financing arrangements		2,911	260,553				263,464
Accrued dividends of Series A mandatorily redeemable convertible preferred stock	74,775				(74,775)		(74,775)
Accrued dividends of Series C equity preferred stock				915,335	(915,335)
Accrual of common shares to be issued in connection with financing arrangements			29,897				29,897
Unrealized gain on available for sale securities						(51,580)	(51,580)
Net (loss)					(1,956,697)		(1,956,697)
Ending Balance at May. 31, 2013	$ 1,916,330	$ 32,211	4,013,242	$ 11,245,447	(26,228,524)	96,795	(10,840,829)
Ending Balance, Shares at May. 31, 2013	1,549	322,107,908		6,805
Issuance of common stock as additional consideration in financing arrangements		$ 3,063	171,542				174,605
Issuance of common stock as additional consideration in financing arrangements, Shares		30,633,741
Accrued dividends of Series A mandatorily redeemable convertible preferred stock	77,810				(77,810)		(77,810)
Accrued dividends of Series C equity preferred stock				990,789	(990,789)
Accrual of common shares to be issued in connection with financing arrangements			(13,488)				(13,488)
Unrealized gain on available for sale securities						42,125	42,125
Net (loss)					(1,847,712)		(1,847,712)
Ending Balance at May. 31, 2014	$ 1,994,140	$ 35,274	$ 4,171,296	$ 12,236,236	$ (29,144,834)	$ 138,920	$ (12,563,108)
Ending Balance, Shares at May. 31, 2014	1,549	352,741,649		6,805