CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balances, at May. 31, 2012	$ 556,186	$ 17,737,807	$ (6,030)	$ (13,309,329)	$ 4,978,634
Balances, (in Shares) at May. 31, 2012	6,952,339
Exercise of stock options	9,790	41,724			51,514
Exercise of stock options (in Shares)	122,375
Foreign currency translation			(2,976)		(2,976)
Sale of shares of common stock	16,000	234,000			250,000
Sale of shares of common stock (in Shares)	200,000
Compensation expense in connection with options granted		20,865			20,865
Net income				536,957	536,957
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
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
Compensation expense in connection with options granted		11,003			11,003
Net income				(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