RELATED PARTY NOTES PAYABLE - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 12, 2021	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Note Payable [Line Items]
Loss on extinguishment of debt		$ 0	$ 0	$ 1,342	$ 0
Affiliated Entity
Note Payable [Line Items]
Notes payable, related parties	$ 470
Debt conversion, converted instrument, shares issued, fair value, per share (in dollars per share)	$ 0.75
Loss on extinguishment of debt	$ 1,300
Affiliated Entity | Convertible Common Stock
Note Payable [Line Items]
Debt conversion, converted instrument, shares issued (in shares)	5,100,000
Affiliated Entity | Interest Payable
Note Payable [Line Items]
Due to related parties	$ 1,600