Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Finance lease cost
Amortization of ROU assets	$ 448	$ 365	$ 850	$ 738
Interest on lease liabilities	54	46	108	94
Finance lease cost	502	411	958	832
Operating lease cost	11,389	12,203	23,086	24,618
Short-term lease cost	222	270	491	433
Variable lease cost	3,724	1,583	6,915	4,238
Impairment of right-of-use assets	0	0	1,629	0
Sublease income	(1,051)	(738)	(2,114)	(1,245)
Total lease cost	$ 14,786	$ 13,729	$ 30,965	$ 28,876