Business, Basis of Presentation and Summary of Significant Accounting Policies - Insurance Liabilities (Details) - General liability, workers' compensation and automobile - USD ($) $ in Thousands	Jul. 31, 2024	Apr. 30, 2024
Loss contingencies
Medical self‑insurance	$ 4,839	$ 6,067
General liability, automobile and workers’ compensation	24,152	22,731
Expected recoveries for insurance liabilities	$ (4,786)	$ (3,746)