Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Finance lease cost:
Amortization of right-of-use assets	$ 24,501	$ 22,295	$ 23,769
Interest on lease liabilities	7,187	8,179	11,164
Operating lease cost	57,093	47,778	42,383
Variable lease cost	19,699	17,825	12,914
Total lease cost	$ 108,480	$ 96,077	$ 90,230