Balance Sheet Details - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2021	Apr. 30, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 11,536	$ 10,582
Less accumulated depreciation	(5,403)	(1,859)
Property and equipment, net	6,133	8,723
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 8,658	8,215
Computer equipment
Property, Plant and Equipment [Line Items]
Useful Life	36 months
Total property and equipment	$ 2,539	2,028
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Useful Life	60 months
Total property and equipment	$ 339	$ 339

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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