Balance Sheet Components - Schedule of Cost and Accumulated Depreciation of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 20,128	$ 19,208
Less: accumulated depreciation	(15,036)	(12,001)
Property and equipment, net	5,092	7,207
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 10,081	10,863
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Total property and equipment	$ 2,220	1,473
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 6,093	5,753
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Assets under construction
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 1,734	$ 1,119