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CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)
Feb. 28, 2014
May 31, 2013
Allowance for doubtful accounts (in Dollars) $ 120,405 $ 115,730
Accumulated depreciation and amortization (in Dollars) $ 1,163,523 $ 844,684
Preferred stock, Shares authorized 5,000,000 5,000,000
Preferred stock, Shares Issued 0 0
Preferred stock, Shares Outstanding 0 0
Preferred stock, No Par Value (in Dollars per share)      
Common stock, Par Value (in Dollars per share) $ 0.08 $ 0.08
Common stock, Shares Authorized 25,000,000 25,000,000
Common stock, Shares Issued 7,513,714 7,274,714
Common stock, Shares Outstanding 7,513,714 7,274,714