Revenue - Disaggregated Revenue by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 389,056	$ 310,582	$ 266,795
Software Licenses
Disaggregation of Revenue [Line Items]
Total revenue	94,200	29,600	18,000
North America
Disaggregation of Revenue [Line Items]
Total revenue	346,217	269,895	210,501
Europe, the Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	40,748	35,809	47,758
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	286	3,622	7,913
Rest of World
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,805	$ 1,256	$ 623
United States | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Geographic concentration risk, percentage	86.00%	86.00%	79.00%