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Goodwill (Details) $ in Thousands	3 Months Ended
	Jul. 29, 2017 USD ($)
Goodwill
Balance as of April 29, 2017	$ 7,812
Foreign currency translation	459
Balance as of July 29, 2017	8,271
Live Events
Goodwill
Balance as of April 29, 2017	2,274
Foreign currency translation	33
Balance as of July 29, 2017	2,307
Commerical
Goodwill
Balance as of April 29, 2017	3,199
Foreign currency translation	223
Balance as of July 29, 2017	3,422
Transportation
Goodwill
Balance as of April 29, 2017	45
Foreign currency translation	32
Balance as of July 29, 2017	77
International
Goodwill
Balance as of April 29, 2017	2,294
Foreign currency translation	171
Balance as of July 29, 2017	$ 2,465

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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-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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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

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+ References

No definition available.

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