Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Leases [Abstract]
Operating lease cost	$ 9,346	$ 6,721	$ 2,290
Amortization of right-of-use assets	5,882	4,489	2,870
Interest on lease liabilities	$ 2,966	$ 2,337	$ 612