Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Feb. 29, 2012	Feb. 28, 2011
Cash Flows from Operating Activities:
Net income (loss)	$ 914,939	$ (947,894)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	867,005	801,835
Stock-based compensation	0	71,976
Changes in receivables	(294,002)	242,540
Changes in inventory	(1,339,103)	(172,465)
Changes in prepaid expenses and other	(82,994)	(697)
Change in other assets	(3,320)	320
Changes in accounts payable and accrued expenses	1,500,827	426,987
Net cash provided by operating activities	1,563,352	422,602
Cash Flows from Investing Activities:
Purchase of property and equipment	(435,211)	(1,173,301)
Cash Flows from Financing Activities:
Proceeds from note payable	0	2,000,000
Proceeds from note payable to related party	0	500,000
Payments on long-term debt	(935,964)	(1,658,506)
Payments on advances from related party	(93,500)	(103,501)
Capital contributions to variable interest entity	75,000	0
Distributions by variable interest entity	(54,560)	0
Net cash provided by (used in) financing activities	(1,009,024)	737,993
Net Increase in Cash	119,117	(12,706)
Cash, beginning of period	169,420	163,749
Cash, end of period	288,537	151,043
Non-Cash Activities:
Acquisition of equipment by capital lease or debt	563,026	0
Preferred dividend accrual	160,274	243,082
Net decrease in liabilities due to deconsolidation of VIE	990,378	0
Supplemental Information:
Interest paid	$ 398,523	$ 336,614