Consolidated Balance Sheets (USD $)	May 31, 2013	May 31, 2012
Current Assets:
Cash	$ 366,896	$ 194,400
Accounts receivable, net of allowance for doubtful accounts of $100.000 and $50,000 for 2013 and 2012, respectively	2,239,594	2,715,893
Inventory	1,044,379	956,638
Prepaid expenses	119,198	45,090
Total Current Assets	3,770,067	3,912,021
Property and Equipment, net of accumulated depreciation	7,044,139	7,798,178
Deferred Tax Asset	1,159,000	585,000
Other Assets	71,371	86,454
Total Assets	12,044,577	12,381,653
Current Liabilities:
Current portion of long-term debt	1,344,160	1,286,312
Accounts payable and accrued expenses	1,643,339	2,581,787
Accounts payable and accrued expenses - related parties	1,551,154	1,285,714
Preferred dividends payable	1,883,959	2,924,108
Total Current Liabilities	6,422,612	8,077,921
Long-Term Debt, net of current portion	9,658,020	10,757,561
Deficit:
Preferred stock, $0.0001 par value, cumulative, 20,750,000 shares authorized, 50,000 shares issued and outstanding, liquidation preference of $5,000,000	5	5
Common stock, $0.0001 par value, 5,000,000,000 shares authorized, 26,111,201 shares issued and outstanding	2,611	2,611
Additional paid-in capital	53,142,717	53,089,293
Accumulated deficit	(58,321,266)	(60,586,143)
Total Greystone Stockholders' Deficit	(5,175,933)	(7,494,234)
Non-controlling interest	1,139,878	1,040,405
Total Deficit	(4,036,055)	(6,453,829)
Total Liabilities and Deficit	$ 12,044,577	$ 12,381,653