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Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	12 Months Ended
	Apr. 30, 2022 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 8,414
Foreign currency translation	(487)
Ending Balance	7,927
Live Events
Goodwill [Roll Forward]
Beginning Balance	2,313
Foreign currency translation	(17)
Ending Balance	2,296
Commercial
Goodwill [Roll Forward]
Beginning Balance	3,464
Foreign currency translation	(115)
Ending Balance	3,349
Transportation
Goodwill [Roll Forward]
Beginning Balance	84
Foreign currency translation	(16)
Ending Balance	68
International
Goodwill [Roll Forward]
Beginning Balance	2,553
Foreign currency translation	(339)
Ending Balance	$ 2,214

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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: 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=120320667&loc=SL49117168-202975

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
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-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
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X

- 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

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-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

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- Definition

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+ References

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