7. INCOME TAXES (Details 3) - USD ($) $ in Thousands	May. 31, 2015	May. 31, 2014
Components of Deferred Tax Assets
Net operating losses	$ 15,063	$ 12,368
Credit carryforwards	3,946	4,192
Inventory reserves	1,429	1,822
Reserves and accruals	2,809	2,899
Other	960	703
Gross deferred tax assets	24,207	21,984
Less: Valuation allowance	(24,207)	(21,984)
Net deferred tax assets	$ 0	$ 0