DISCONTINUED OPERATIONS - Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss from discontinued operations	$ 0	$ (4,048)	$ 0	$ (2,870)
Discontinued Operations, Held-for-sale \| Mining Segment \| Mining Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cryptoasset mining revenue, net	0	907	0	2,945
Cost of sales	0	628	0	1,589
Gross profit	0	279	0	1,356
Impairment of cryptocurrency assets	0	(225)	0	(390)
Loss on the sale of fixed assets	0	(578)	0	(582)
Loss on the reclassification of fixed assets		(3,524)		(3,254)
Net loss from discontinued operations	$ 0	$ (4,048)	$ 0	$ (2,870)

Discontinued Operation, Gain (Loss) on Reclassification of Discontinued Operation, Net of Tax

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Disposal Group, Including Discontinued Operation, Intangible Assets Impairment

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Disposal Group, Including Discontinued Operation, Revenue, Net of Pool Fees

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Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of gross profit attributable to disposal group, including, but not limited to, discontinued operation.

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