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Leases - Supplemental Statement of Operations Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Lessee, Lease, Description [Line Items]
Non-cash lease expense	$ 794	$ 925	$ 2,416	$ 2,469
Cost of sales
Lessee, Lease, Description [Line Items]
Non-cash lease expense	209	297	602	856
Research and development
Lessee, Lease, Description [Line Items]
Non-cash lease expense	197	192	682	388
Sales and marketing
Lessee, Lease, Description [Line Items]
Non-cash lease expense	111	100	304	298
General and administrative
Lessee, Lease, Description [Line Items]
Non-cash lease expense	$ 277	$ 336	$ 828	$ 927

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977

+ Details

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