Income Taxes - Summary of Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Apr. 30, 2025	Apr. 30, 2024
Deferred tax assets:
Accrued compensation	$ 5,837	$ 5,324
Net operating loss carryforwards	537,912	547,590
Intangible assets	5,641	5,768
Deferred revenue	7,478	8,057
Stock-based compensation	20,613	18,858
Tax credits	32,271	31,373
Disallowed interest expense	13,183	12,380
Lease liabilities	4,727	3,706
Other	11,018	6,657
Gross deferred tax assets	638,680	639,713
Less valuation allowance	(437,497)	(386,882)
Total deferred tax assets	201,183	252,831
Deferred tax liabilities:
Deferred contract acquisition costs	(38,629)	(37,005)
Right of use assets	(4,133)	(2,546)
Gross deferred tax liabilities	(42,762)	(39,551)
Net deferred tax assets	$ 158,421	$ 213,280