7. INCOME TAXES (Details 3) (USD $) In Thousands, unless otherwise specified	May 31, 2014	May 31, 2013
Components of Deferred Tax Assets
Net operating losses	$ 12,368	$ 11,903
Credit carryforwards	4,192	4,028
Inventory reserves	1,822	2,667
Reserves and accruals	2,899	2,913
Other	703	679
Gross deferred tax assets	21,984	22,190
Less: Valuation allowance	(21,984)	(22,190)
Net deferred tax assets	$ 0	$ 0