Revenue - Disaggregated Revenue by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 266,795	$ 252,759	$ 183,217
North America
Disaggregation of Revenue [Line Items]
Total revenue	210,501	197,485	119,795
Europe, the Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	47,758	46,251	56,030
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	7,913	9,023	5,992
Rest of World
Disaggregation of Revenue [Line Items]
Total revenue	$ 623	$ 0	$ 1,400
United States | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Geographic concentration risk, percentage	79.00%	78.00%	65.00%
France | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Geographic concentration risk, percentage			12.00%
Netherlands | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Geographic concentration risk, percentage			12.00%