Revenue - Disaggregated Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 73,229	$ 62,408	$ 145,591	$ 127,716
North America
Disaggregation of Revenue [Line Items]
Total revenue	$ 61,179	$ 47,916	$ 122,891	$ 99,854
United States | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Geographic concentration risk, percentage	83.00%	77.00%	84.00%	78.00%
Europe, the Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	$ 10,607	$ 11,889	$ 20,165	$ 22,592
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	1,100	2,435	1,925	4,802
Rest of World
Disaggregation of Revenue [Line Items]
Total revenue	$ 343	$ 168	$ 610	$ 468