Leases - Summary of Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Jan. 31, 2023	Apr. 30, 2022
Finance Leases:
Property and equipment, at cost	$ 7,105	$ 5,770
Accumulated depreciation	(2,896)	(3,085)
Property and equipment, net	4,209	2,685
Other accrued liabilities	1,302	1,049
Other liabilities	2,958	1,657
Total finance lease liabilities	$ 4,260	$ 2,706
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property and equipment, net	Property and equipment, net
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other accrued liabilities	Other accrued liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Weighted average remaining lease terms:
Operating leases	4 years 6 months	5 years 1 month 6 days
Finance leases	3 years 10 months 24 days	3 years 3 months 18 days
Weighted average discount rate:
Operating leases	4.50%	4.30%
Finance leases	4.50%	3.20%