LEASES - Schedule of future minimum lease payments (Details) - USD ($) $ in Thousands	Feb. 28, 2022	May 31, 2021
Operating Leases
FY22	$ 78
FY23	318
FY24	326
FY25	334
FY26	342
Beyond	176
Total	1,574
Total Operating Lease Liabilties	1,154
Operating lease liabilities, current	185
Operating lease liabilities, noncurrent	969
Finance Leases
FY22	7
FY23	29
FY24	29
FY25	6
FY26	0
Beyond	0
Total	71
Finance Lease, Liability	66
Finance Lease liability, current	26
Finance lease liability, noncurrent	40
Total
FY22	85
FY23	347
FY24	355
FY25	340
FY26	342
Beyond	176
Total	1,645
Total lease liabilities	1,220	$ 0
Current portion of lease liability	211	0
Long-term portion of lease liability	$ 1,009	$ 0

Finance Lease, Liability, to be Paid, After Year Four

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- Definition

Lease, Liability

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No definition available.

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Balance Type:	credit
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- Definition

Lease, Liability, Current

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- Definition

Lease, Liability, Noncurrent

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No definition available.

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- Definition

Lease, Liability, Payment Due

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No definition available.

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- Definition

Lease, Liability, Payment, Due

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- Definition

Lease, Liability, to be Paid, After Year Four

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No definition available.

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- Definition

Lease, Liability, to be Paid, Remainder of Fiscal Year

+ References

No definition available.

+ Details

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- Definition

Lease, Liability, to be Paid, Year Four

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- Definition

Lease, Liability, to be Paid, Year One

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- Definition

Lease, Liability, to be Paid, Year Three

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No definition available.

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- Definition

Lease, Liability, to be Paid, Year Two

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No definition available.

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- Definition

Lessee, Operating Lease, Liability, to be Paid, After Year Four

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No definition available.

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- References

No definition available.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

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-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payments for finance lease.

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

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Balance Type:	credit
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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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