Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Leases [Abstract]
Operating lease cost	$ 10,174	$ 9,346	$ 6,721
Amortization of right-of-use assets	10,417	5,882	4,489
Interest on lease liabilities	4,491	2,966	2,337
Operating cash flows required by operating leases	8,693	7,725	5,468
Operating cash flows required by finance leases	4,491	2,966	2,337
Financing cash flows required by finance leases	9,156	5,345	4,162
Right-of-use assets obtained in exchange for new finance lease liabilities	17,626	25,166	52,525
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 14,646	$ 14,642	$ 87,723