Acquisitions - Tiffin Group Narrative (Details) - USD ($) $ in Thousands		9 Months Ended
	Dec. 18, 2020	Apr. 30, 2022	Apr. 30, 2021
Business Acquisition [Line Items]
Total cash consideration for acquisition, less cash acquired		$ 781,967	$ 310,938
Tiffin Group
Business Acquisition [Line Items]
Total cash consideration for acquisition, less cash acquired	$ 288,238
Acquired finite-lived intangible assets, weighted average useful life	18 years 9 months 18 days
Tiffin Group | Asset-based credit facility
Business Acquisition [Line Items]
Amount of cash borrowed from long term line of credit to fund business acquisition	$ 165,000
Tiffin Group | Trademarks
Business Acquisition [Line Items]
Remaining amortization period	20 years
Tiffin Group | Minimum | Dealer network
Business Acquisition [Line Items]
Remaining amortization period	18 years
Tiffin Group | Minimum | Backlog
Business Acquisition [Line Items]
Remaining amortization period	5 months
Tiffin Group | Maximum | Dealer network
Business Acquisition [Line Items]
Remaining amortization period	20 years
Tiffin Group | Maximum | Backlog
Business Acquisition [Line Items]
Remaining amortization period	7 months