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Discontinued Operations - Summary of Major Business Line Items Included in Discontinued Operations in Condensed Consolidation Statements of Income/(Loss) and Comprehensive Income/(Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income/(loss) from discontinued operations before income taxes	$ 8,478	$ (88,883)	$ (6,510)
Income/(loss) from discontinued operations, net of tax	8,478	(88,883)	(6,510)
Outdoor Products and Accessories Business
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income/(loss) from discontinued operations, net of tax	8,500	(88,900)	(6,500)
Spin-off | Outdoor Products and Accessories Business
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net revenues	61,249	148,776	156,942
Cost of sales	27,147	79,760	76,994
Operating expenses	23,458	168,140	85,408
Interest income/(expense), net	112	21	(6)
Other income/(expense), net		(21)
Income/(loss) from discontinued operations before income taxes	10,756	(99,124)	(5,466)
Income tax expense/(benefit)	2,278	(10,241)	1,044
Income/(loss) from discontinued operations, net of tax	$ 8,478	$ (88,883)	$ (6,510)

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