Income Taxes - Summary of Reconciliation of Income Taxes Statutory Income Tax Rate to Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Income Tax Disclosure [Abstract]
Dutch statutory income tax	$ (55,954)	$ (49,448)	$ (30,428)
Foreign income taxed at different rates	(1,305)	(2,197)	(486)
Stock-based compensation	5,018	(31,372)	(100,931)
Tax credits	(7,349)	(10,834)	(11,020)
Change in valuation allowance	69,271	91,841	146,571
Deferred tax asset revaluation	6	(302)	(256)
Other	6,396	6,598	2,963
Total provision for income taxes	$ 19,284	$ 6,059	$ 7,720
Dutch statutory income tax, percentage	25.80%	25.00%	25.00%
Foreign income taxed at different rates (in percentage)	0.60%	1.10%	0.40%
Stock-based compensation (in percentage)	(2.30%)	15.90%	82.90%
Research and development credits (in percentage)	3.40%	5.50%	9.00%
Change in valuation allowance (in percentage)	(31.90%)	(46.40%)	(120.40%)
Deferred tax asset revaluation (in percentage)	0.00%	0.20%	0.20%
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Percent	(1.50%)	(0.90%)	(1.10%)
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Amount	$ 3,201	$ 1,773	$ 1,307
Other (in percentage)	(3.00%)	(3.50%)	(2.30%)
Provision for income taxes (in percentage)	(8.90%)	(3.10%)	(6.30%)