7. INCOME TAXES (Details 3) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Deferred tax assets:
Net operating losses	$ 13,634	$ 13,475
Lease liability	483	0
Credit carryforwards	5,089	4,995
Inventory reserves	1,005	790
Reserves and accruals	739	1,379
Other	319	298
Gross deferred tax assets	21,269	20,937
Deferred tax liabilities:
Operating lease right-of-use assets	(449)	0
Less: Valuation allowance	(20,820)	(20,937)
Net deferred tax assets	$ 0	$ 0

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