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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balances at May. 31, 2013 $ 581,976 $ 18,034,396 $ (9,006) $ (12,772,372) $ 5,834,994
Balances (in Shares) at May. 31, 2013 7,274,714        
Exercise of stock options $ 5,520 29,755     $ 35,275
Exercise of stock options (in Shares) 69,000       69,000
Foreign currency translation     (1,143)   $ (1,143)
Sale of shares of common stock $ 16,000 234,000     $ 250,000
Sale of shares of common stock (in Shares) 200,000       200,000
Compensation expense in connection with options granted   11,003     $ 11,003
Net loss       (215,660) (215,660)
Balances at May. 31, 2014 $ 603,496 18,309,154 (10,149) (12,988,032) 5,914,469
Balances (in Shares) at May. 31, 2014 7,543,714        
Exercise of stock options $ 1,840 7,720     $ 9,560
Exercise of stock options (in Shares) 23,000       23,000
Foreign currency translation     (2,115)   $ (2,115)
Compensation expense in connection with options granted   10,016     10,016
Net loss       (331,410) (331,410)
Balances at May. 31, 2015 $ 605,336 $ 18,326,890 $ (12,264) $ (13,319,442) $ 5,600,520
Balances (in Shares) at May. 31, 2015 7,566,714