Business, Basis of Presentation and Summary of Significant Accounting Policies - Insurance Liabilities (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Apr. 30, 2023
Other accrued expenses and current liabilities.
Loss Contingencies [Line Items]
Medical self-insurance	$ 6,067	$ 4,275
General liability, workers' compensation and automobile | Other accrued expenses and current liabilities.
Loss Contingencies [Line Items]
General liability, automobile and workers’ compensation	22,731	20,502
General liability, workers' compensation and automobile | Prepaid expenses and other current assets
Loss Contingencies [Line Items]
Expected recoveries for insurance liabilities	$ (3,746)	$ (3,531)