Notes Payable (Details 1) (USD $)	Feb. 28, 2013	May 31, 2012
Note payable	$ 527,716
Other notes payable	88,962	110,778
Total Notes Payable	11,104,859	12,043,873
Less: Current portion	1,291,736	1,286,312
Long-term Debt	9,813,123	10,757,561
Capitalized lease payable, due August 15, 2016, 5% interest, monthly payments of $10,625 plus $0.50 per pallet for monthly sales in excess of 12,500	417,492	481,597
Note payable to F&M Bank & Trust Company, prime rate of interest not less than 4.5%, due March 13, 2015, monthly principal payments of $76,561 plus interest
Note payable	4,573,333	5,226,665
Note payable by variable interest entity to F&M Bank & Trust Company, prime rate of interest but not less than 4.75%, due March 15, 2014, monthly installments of $35,512, secured by buildings and land
Note payable	3,431,356	3,623,070
Note payable to BancFirst, prime rate of interest plus 1%, paid June 2012
Note payable		8,047
Note payable to Robert Rosene, 7.5% interest, due January 15, 2014
Note payable	2,066,000	2,066,000
Note payable to Warren Kruger, 7.5% interest, due January 15, 2014
Note payable	$ 527,716	$ 527,716