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Goodwill (Details) $ in Thousands	6 Months Ended
	Oct. 31, 2020 USD ($)
Goodwill
Balance as of May 2, 2020	$ 7,743
Foreign currency translation	307
Balance as of October 31, 2020	8,050
Live Events
Goodwill
Balance as of May 2, 2020	2,266
Foreign currency translation	15
Balance as of October 31, 2020	2,281
Commercial
Goodwill
Balance as of May 2, 2020	3,144
Foreign currency translation	106
Balance as of October 31, 2020	3,250
Transportation
Goodwill
Balance as of May 2, 2020	38
Foreign currency translation	15
Balance as of October 31, 2020	53
International
Goodwill
Balance as of May 2, 2020	2,295
Foreign currency translation	171
Balance as of October 31, 2020	$ 2,466

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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-Paragraph 1
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 20
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-Paragraph 1
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- Definition

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