Revenue - Disaggregated Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2024	Jan. 31, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 78,401	$ 66,669	$ 223,992	$ 194,385
North America
Disaggregation of Revenue [Line Items]
Total revenue	$ 68,356	$ 55,254	$ 191,247	$ 155,108
United States | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Geographic concentration risk, percentage	86.00%	83.00%	85.00%	80.00%
Europe, the Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	$ 9,040	$ 9,546	$ 29,205	$ 32,138
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	952	1,801	2,877	6,603
Rest of World
Disaggregation of Revenue [Line Items]
Total revenue	$ 53	$ 68	$ 663	$ 536