LEASES - Narrative (Details) $ in Thousands	Feb. 28, 2022 USD ($) contract	May 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Right of use asset, net	$ 1,207	$ 0
Lease liability	$ 1,220	$ 0
Equipment
Lessee, Lease, Description [Line Items]
Number of finance leases | contract	1