11. LONG-TERM DEBT (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Jul. 17, 2016	May 31, 2016	Apr. 14, 2016	Apr. 10, 2015
Debt Disclosure [Abstract]
Convertible debt, principal amount	$ 6,110			$ 6,110
Convertible note, interest rate	9.00%
Convertible note, maturity	Apr. 10, 2019
Convertible note, interest payment	Interest is payable quarterly on March 1, June 1, September 1 and December 1 of each year.
Debt issuance costs	$ 356
Amortization of debt issuance costs	44	$ 37
Unamortized debt issuance costs	$ (104)			$ (148)
Initial conversion price for the Convertible Notes	$ 2.30
Convertible Notes, Terms of Conversion Feature	The conversion price for the Convertible Notes is $2.30 per share of the Company’s common stock and is subject to adjustment upon the occurrence of certain specified events (as adjusted, the “Conversion Price”). Holders may convert all or any part of the principal amount of their Convertible Notes in integrals of $10,000 at any time prior to the maturity date. Upon conversion, the Company will deliver shares of its common stock to the holder of Convertible Notes electing such conversion. The Company may not redeem the Convertible Notes prior to maturity.
Line of credit, maximum borrowing capacity	$ 2,000
Balance available to borrow under the line of credit	$ 0
Convertible Debt Principal amount						$ 4,110
Conversion from the Credit Facility to Convertible Note			$ 1,100		$ 900