Significant Accounting Policies (details) (USD $)	12 Months Ended
	May 31, 2014	May 31, 2013
Significant Accounting Policies details
Capitalized patent costs incurred	$ 6,000	$ 19,000
Allowance for uncollectible accounts	18,000	29,000
Net (gain) loss from foreign currency related transactions	$ (33,000)	$ (7,000)