Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Apr. 30, 2021
Operating leases
Right-of-use assets	$ 29,010	$ 5,094
Lease liabilities, current	3,613	3,894
Lease liabilities, non-current	26,851	1,735
Total operating lease liabilities	$ 30,464	$ 5,629
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets, non-current	Other assets, non-current
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued and other current liabilities	Accrued and other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities