6. ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	May 31, 2016	May 31, 2015	May 31, 2014
Accrued Expenses Details
Payroll related	$ 706	$ 503
Commissions and bonuses	227	94
Professional services	166	142
Warranty	155	137	$ 223
Accrued interest	110	0
Investor relations	88	32
Taxes payable	63	101
Other	38	36
Accrued expenses	$ 1,553	$ 1,045