Consolidated Statements of Changes in Deficit (USD $)	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total Greystone Stockholders’ Deficit	Variable Interest Entities
Balances, May 31, 2012 at May. 31, 2010	$ (7,681,536)	$ 5	$ 2,611	$ 53,017,317	$ (61,527,891)	$ (8,507,958)	$ 826,422
Balances, May 31, 2012 (in shares) at May. 31, 2010		50,000	26,111,201
Adjustment for consolidating variable interest entities	(1,541,483)	(5)		(4,999,995)		(5,000,000)	3,458,517
Capital contributions	293,256						293,256
Stock based compensation	71,976			71,976		71,976
Net Income (Loss)	(847,204)				(770,095)	(770,095)	(77,109)
Balances, May 31, 2011 at May. 31, 2011	(9,704,991)		2,611	48,089,298	(62,297,986)	(14,206,077)	4,501,086
Balances, May 31, 2011 (in shares) at May. 31, 2011			26,111,201
Capital contributions	75,000						75,000
Cash distributions	(63,672)						(63,672)
Preferred dividends	(242,192)				(242,192)	(242,192)
Net Income (Loss)	2,491,650				2,345,460	2,345,460	146,190
Adjustment for deconsolidating variable interest entities	990,376	5		4,999,995	(391,425)	4,608,575	(3,618,199)
Balances, May 31, 2011 at May. 31, 2012	$ (6,453,829)	$ 5	$ 2,611	$ 53,089,293	$ (60,586,143)	$ (7,494,234)	$ 1,040,405
Balances, May 31, 2011 (in shares) at May. 31, 2012		50,000	26,111,201