Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	May 31, 2014	May 31, 2013
Cash Flows from Operating Activities:
Net income	$ 3,131,626	$ 2,793,210
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,309,573	1,387,987
Increase in deferred tax asset	(1,051,000)	(574,000)
Stock-based compensation	53,424	53,424
Changes in trade accounts receivable	216,031	476,299
Changes in related party receivables	(491,682)	(1,218,430)
Changes in inventory	(571,786)	(87,741)
Changes in prepaid expenses	22,028	(74,108)
Changes in accounts payable and accrued expenses	(459,814)	(673,008)
Other	2,785	2,033
Net cash provided by operating activities	2,161,185	2,085,666
Cash Flows from Investing Activities:
Purchase of property and equipment	(2,246,101)	(620,898)
Cash Flows from Financing Activities:
Proceeds from long-term debt	12,612,500	250,000
Proceeds from revolving loan	885,000	0
Payments on long-term debt and capitalized leases	(8,640,891)	(1,291,693)
Payments on revolving loan	(500,000)	0
Issuance cost of long-term debt	(129,722)	0
Payments on advances from related party	(92,000)	(148,500)
Proceeds from exercised stock options	140,000	0
Preferred dividends paid	(3,548,286)	0
Distributions by variable interest entity	(347,318)	(102,079)
Net cash provided by (used in) financing activities	379,283	(1,292,272)
Net Increase in Cash	294,367	172,496
Cash, beginning of period	366,896	194,400
Cash, end of period	661,263	366,896
Non-Cash Activities:
Acquisition of equipment in exchange for net related party receivable	1,087,302	0
Reduction in carrying value of equipment resulting from capital lease termination	212,311	0
Settlement of related party note payable in acquisition of equipment	527,716	0
Preferred dividend accrual	27,603	326,781
Supplemental Information:
Interest paid	567,507	423,530
Taxes paid	$ 26,045	$ 0