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Debt - Long-term debt (Details) - USD ($)	12 Months Ended
Debt - Long-term debt (Details) - USD ($)	Apr. 30, 2025	Apr. 30, 2026	Oct. 04, 2024
Long-term debt
Total long-term debt	$ 30,000,000	$ 747,500,000
Less unamortized debt issuance costs-convertible notes		18,533,000
Total long-term debt, net of unamortized debt issuance costs-convertible notes	30,000,000	728,967,000
Unamortized debt issuance costs-revolving credit facility	$ 1,281,000	1,745,000
Current period interest rate	5.90%
Term loan
Long-term debt
Unamortized debt issuance costs-revolving credit facility			$ 590,000
Convertible Notes
Long-term debt
Total long-term debt		$ 747,500,000