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INCOME TAXES (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022	May 31, 2021
Valuation allowance	$ (21,900)	$ (1,100)	$ (300)
Unrecognized tax benefit	2,484	2,276	$ 2,018	$ 1,928
Federal
Net operating loss carryforward	(34,600)	(47,000)
Research and development tax credit carryforwards	3,300	2,900
Alternative minimum tax credit carryforwards		14,400
State
Net operating loss carryforward	(29,800)	(30,200)
Research and development tax credit carryforwards	$ 7,100	6,600
Alternative minimum tax credit carryforwards		$ 30

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

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