Consolidated Balance Sheets (Unaudited) - USD ($)	Feb. 28, 2017	May 31, 2016
Current Assets:
Cash	$ 483,027	$ 897,377
Accounts receivable - Trade, net of allowance for doubtful accounts of $31,660 and $13,260, respectively	393,657	3,536,574
Accounts receivable - Related party receivable	121,577	150,113
Inventory	3,551,442	1,304,495
Prepaid expenses	157,501	70,058
Total Current Assets	4,707,204	5,958,617
Property and Equipment, net of accumulated depreciation	20,110,110	12,565,319
Deferred Tax Asset	726,982	1,283,682
Other Assets	11,841	23,405
Total Assets	25,556,137	19,831,023
Current Liabilities:
Current portion of long-term debt	4,629,186	2,088,327
Accounts payable and accrued expenses	2,949,117	2,642,112
Accrued interest payable - related party		2,475,690
Preferred dividends payable	26,850	60,005
Total Current Liabilities	7,605,153	7,266,134
Long-Term Debt, net of current portion	17,783,137	13,289,236
Equity:
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, 28,361,201 and 27,886,201 shares issued and outstanding	2,836	2,789
Additional paid-in capital	53,790,764	53,613,811
Accumulated deficit	(54,688,575)	(55,385,912)
Total Greystone Stockholders' Deficit	(894,970)	(1,769,307)
Non-controlling interest	1,062,817	1,044,960
Total Equity (Deficit)	167,847	(724,347)
Total Liabilities and Equity (Deficit)	$ 25,556,137	$ 19,831,023

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

Name:	us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.