Revenue - Disaggregated Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 72,362	$ 65,308
North America
Disaggregation of Revenue [Line Items]
Total revenue	$ 61,712	$ 51,938
United States | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Geographic concentration risk, percentage	85.00%	79.00%
Europe, the Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	$ 9,559	$ 10,703
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	825	2,367
Rest of World
Disaggregation of Revenue [Line Items]
Total revenue	$ 266	$ 300