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Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 01, 2020	Aug. 03, 2019
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 143,644	$ 180,256
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	64,027	76,307
Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	79,617	103,949
Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	34,506	44,035
Commercial | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	22,892	27,703
Commercial | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	11,614	16,332
Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	51,474	59,306
Live Events | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	6,214	9,120
Live Events | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	45,260	50,186
High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	28,943	30,465
High School Park and Recreation | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	19,368	22,599
High School Park and Recreation | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	9,575	7,866
Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	14,498	19,018
Transportation | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	6,374	6,697
Transportation | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	8,124	12,321
International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	14,223	27,432
International | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	9,179	10,188
International | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	5,044	17,244
Unique Configuration
Disaggregation of Revenue [Line Items]
Disaggregated revenue	70,106	92,157
Unique Configuration | Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	8,727	12,965
Unique Configuration | Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	41,975	45,587
Unique Configuration | High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	7,668	6,030
Unique Configuration | Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	7,724	11,897
Unique Configuration | International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	4,012	15,678
Limited Configuration
Disaggregation of Revenue [Line Items]
Disaggregated revenue	63,581	75,265
Limited Configuration | Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	22,555	27,235
Limited Configuration | Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	5,419	7,713
Limited Configuration | High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	20,688	23,800
Limited Configuration | Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	6,266	6,587
Limited Configuration | International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	8,653	9,930
Service and Other
Disaggregation of Revenue [Line Items]
Disaggregated revenue	9,957	12,834
Service and Other | Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	3,224	3,835
Service and Other | Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	4,080	6,006
Service and Other | High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	587	635
Service and Other | Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	508	534
Service and Other | International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 1,558	$ 1,824

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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