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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Feb. 28, 2021	May 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	$ 331,185	$ 327,966
Accumulated amortization	(144,969)	(130,830)
Net carrying value, finite intangible items	186,216	197,136
Product technologies
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	254,675	251,569
Accumulated amortization	(99,066)	(88,547)
Net carrying value, finite intangible items	155,609	163,022
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	60,273	60,160
Accumulated amortization	(33,142)	(30,018)
Net carrying value, finite intangible items	27,131	30,142
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	10,150	10,150
Accumulated amortization	(6,931)	(6,691)
Net carrying value, finite intangible items	3,219	3,459
Licenses
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	6,087	6,087
Accumulated amortization	(5,830)	(5,574)
Net carrying value, finite intangible items	$ 257	$ 513

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 340
-Section 50
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+ References

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-Name Accounting Standards Codification
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