Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Apr. 30, 2022
Operating Leased Assets [Line Items]
Outstanding amounts under finance lease obligations	$ 3,702
Current maturities	(2,263)
Long-term lease liability	1,439
Lease right-of-use assets	$ 9,101
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Accrued Liabilities, Current
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net
Debt
Operating Leased Assets [Line Items]
Outstanding amounts under finance lease obligations	$ 3,700	$ 5,000