Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 48,283	$ 42,876	$ 42,150
Operating cash flows from finance leases	8,179	11,164	13,316
Financing cash flows from finance leases	31,365	30,371	25,275
Right-of-use assets obtained in exchange for lease obligations
Operating leases	71,252	37,513	38,143
Finance leases	$ 41,699	$ 27,400	$ 50,484