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Goodwill (Details) $ in Thousands	6 Months Ended
	Nov. 02, 2019 USD ($)
Goodwill
Balance as of April 27, 2019	$ 7,889
Foreign currency translation	85
Balance as of November 2, 2019	7,974
Live Events
Goodwill
Balance as of April 27, 2019	2,276
Foreign currency translation	9
Balance as of November 2, 2019	2,285
Commercial
Goodwill
Balance as of April 27, 2019	3,218
Foreign currency translation	64
Balance as of November 2, 2019	3,282
Transportation
Goodwill
Balance as of April 27, 2019	49
Foreign currency translation	9
Balance as of November 2, 2019	58
International
Goodwill
Balance as of April 27, 2019	2,346
Foreign currency translation	3
Balance as of November 2, 2019	$ 2,349

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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-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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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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-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

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+ References

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