Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Intangible Assets and Goodwill - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Goodwill [Line Items]
Impairment charges	$ 0	$ 0	$ 0	$ 10,057
Goodwill impairment loss				1,036
North American Towables \| North America \| Recreational vehicles
Goodwill [Line Items]
Goodwill impairment loss				$ 1,036