Business, Basis of Presentation and Summary of Significant Accounting Policies - Insurance Liabilities (Details) - General liability, workers' compensation and automobile - USD ($) $ in Thousands	Jul. 31, 2025	Apr. 30, 2025
Other accrued expenses and current liabilities.
Loss contingencies
Medical self‑insurance	$ 5,572	$ 5,769
General liability, automobile and workers’ compensation	34,562	34,166
Prepaid expenses and other current assets
Loss contingencies
Expected recoveries for insurance liabilities	$ (8,109)	$ (7,357)