Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Cash Flows from Operating Activities:
Net income	$ 1,103,544	$ 751,141
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	659,013	581,168
Deferred income taxes	(219,300)	0
Stock-based compensation	26,712	0
Changes in receivables	152,769	276,067
Changes in inventory	(176,924)	(738,400)
Changes in prepaid expenses and other	(123,706)	(24,662)
Changes in other assets	4,143	(4,479)
Changes in accounts payable and accrued expenses	(341,191)	664,152
Net cash provided by operating activities	1,085,060	1,504,987
Cash Flows from Investing Activities:
Purchase of property and equipment	(280,176)	(337,731)
Cash Flows from Financing Activities:
Payments on long-term debt and capitalized leases	(638,902)	(721,998)
Payments on advances from related party	0	(59,000)
Capital contributions to variable interest entity	0	75,000
Distributions by variable interest entity	(47,082)	(31,780)
Net cash used in financing activities	(685,984)	(737,778)
Net Increase in Cash	118,900	429,478
Cash, beginning of period	194,400	169,420
Cash, end of period	313,300	598,898
Non-Cash Activities:
Acquisition of equipment by capital lease	0	563,026
Preferred dividend accrual	164,726	81,027
Net decrease in liabilities due to deconsolidation of VIE	0	990,378
Supplemental Information:
Interest paid	$ 219,921	$ 278,413