Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014	Feb. 28, 2013
Income Statement [Abstract]
Sales	$ 4,532,762	$ 4,517,453	$ 15,405,169	$ 16,705,437
Cost of Sales	3,803,454	3,687,258	11,804,150	13,467,061
Gross Profit	729,308	830,195	3,601,019	3,238,376
General, Selling and Administrative Expenses	640,529	472,912	1,782,411	1,573,995
Operating Income	88,779	357,283	1,818,608	1,664,381
Other Income (Expense):
Other income (expense)	(3,600)			6,500
Interest expense	(236,255)	(200,668)	(634,530)	(620,022)
Total Other Expense, net	(239,855)	(200,668)	(634,530)	(613,522)
Income before Income Taxes	(151,076)	156,615	1,184,078	1,050,859
Benefit from Income Taxes	53,000	17,600	290,000	226,900
Net Income	(98,076)	174,215	1,474,078	1,277,759
Income Attributable to Variable Interest Entities, net	(35,340)	(45,688)	(146,523)	(149,898)
Preferred Dividends	(80,137)	(80,137)	(243,082)	(244,863)
Net Income Available to Common Stockholders	$ (213,553)	$ 48,390	$ 1,084,473	$ 882,998
Income Available to Common Stockholders:
Per Share of Common Stock - Basic	$ (0.01)	$ 0	$ 0.04	$ 0.03
Per Share of Common Stock - Diluted	$ (0.01)	$ 0	$ 0.04	$ 0.03
Weighted Average Shares of Common Stock Outstanding -
Basic	26,111,201	26,111,201	26,111,201	26,111,201
Diluted	26,111,201	27,554,523	27,552,209	27,366,000