Segment Disclosure - Net Income by Segment (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 31, 2020 USD ($)	Aug. 01, 2020 USD ($)	Nov. 02, 2019 USD ($)	Aug. 03, 2019 USD ($)	Oct. 31, 2020 USD ($) segment	Nov. 02, 2019 USD ($)
Segment Reporting Information
Number of business units | segment					5
Net sales	$ 127,367		$ 174,911		$ 271,011	$ 355,167
Gross profit	33,314		40,087		69,075	85,592
Non-allocated operating expenses:
General and administrative	7,264		8,965		14,388	18,058
Product design and development	6,737		10,121		14,269	20,621
Operating income	6,659		4,824		16,208	12,439
Nonoperating (expense) income:
Interest income	66		162		151	431
Interest expense	(84)		(31)		(157)	(66)
Other (expense) income, net	(837)		(514)		(1,464)	(321)
Income before income taxes	5,804		4,441		14,738	12,483
Income tax expense (benefit)	2,388		(2,833)		3,855	(1,821)
Net income	3,416	$ 7,467	7,274	$ 7,030	10,883	14,304
Operating Segments
Segment Reporting Information
Net sales	127,367		174,911		271,011	355,167
Gross profit	33,314		40,087		69,075	85,592
Contribution Margin	20,660		23,910		44,865	51,118
Depreciation and amortization
Depreciation, amortization, and impairment	4,227		4,341		8,564	8,724
Operating Segments | Commercial
Segment Reporting Information
Net sales	30,356		39,651		64,862	83,686
Gross profit	8,578		7,862		16,320	17,080
Contribution Margin	4,781		2,853		9,222	6,937
Depreciation and amortization
Depreciation, amortization, and impairment	721		895		1,493	1,869
Operating Segments | Live Events
Segment Reporting Information
Net sales	37,822		59,319		89,296	118,625
Gross profit	7,300		11,934		16,654	24,671
Contribution Margin	4,881		8,362		12,019	17,234
Depreciation and amortization
Depreciation, amortization, and impairment	1,424		1,394		2,875	2,792
Operating Segments | High School Park and Recreation
Segment Reporting Information
Net sales	27,578		30,193		56,521	60,658
Gross profit	8,497		9,224		18,973	19,411
Contribution Margin	5,951		5,988		13,866	12,580
Depreciation and amortization
Depreciation, amortization, and impairment	492		507		988	1,019
Operating Segments | Transportation
Segment Reporting Information
Net sales	15,323		20,330		29,821	39,348
Gross profit	5,312		7,003		10,455	13,757
Contribution Margin	4,446		5,895		8,827	11,347
Depreciation and amortization
Depreciation, amortization, and impairment	234		252		471	516
Operating Segments | International
Segment Reporting Information
Net sales	16,288		25,418		30,511	52,850
Gross profit	3,627		4,064		6,673	10,673
Contribution Margin	601		812		931	3,020
Depreciation and amortization
Depreciation, amortization, and impairment	701		563		1,394	1,087
Operating Segments | Unallocated
Depreciation and amortization
Depreciation, amortization, and impairment	$ 655		$ 730		$ 1,343	$ 1,441