CONCENTRATION OF CREDIT RISK (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	May 31, 2014	May 31, 2013
Accounts receivable reserve are as follows:
Balance, Beginning of Period	$ 29	$ 29
Charged to Costs and Expenses	44
Bad Debt Write-offs	55
Balance, End of Period	$ 18	$ 29