Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
Income Statement [Abstract]
Sales	$ 3,685,044	$ 4,532,762	$ 13,676,492	$ 15,405,169
Cost of Sales	2,431,250	3,803,454	11,428,901	11,804,150
Gross Profit	1,253,794	729,308	2,247,591	3,601,019
General, Selling and Administrative Expenses	573,099	640,529	1,679,041	1,782,411
Operating Income	680,695	88,779	568,550	1,818,608
Other Income (Expense):
Other income (expense)		(3,600)	2,500
Interest expense	(200,151)	(236,255)	(611,568)	(634,530)
Total Other Expense, net	(200,151)	(239,855)	(609,068)	(634,530)
Income (Loss) before Income Taxes	480,544	(151,076)	(40,518)	1,184,078
(Provision) Benefit from Income Taxes	(143,728)	53,000	71,955	290,000
Net Income (Loss)	336,816	(98,076)	31,437	1,474,078
Income Attributable to Variable Interest Entities, net	(57,820)	(35,340)	(171,119)	(146,523)
Preferred Dividends	(80,137)	(80,137)	(243,082)	(243,082)
Net Income (Loss) Attributable to Common Stockholders	$ 198,859	$ (213,553)	$ (382,764)	$ 1,084,473
Income (Loss) Per Share of Common Stock -
Basic and Diluted	$ 0.01	$ (0.01)	$ (0.01)	$ 0.04
Weighted Average Shares of Common Stock Outstanding -
Basic	27,309,812	26,111,201	26,828,417	26,111,201
Diluted	28,014,651	26,111,201	26,828,417	27,552,209