Summary of Significant Accounting Policies - Schedule of Acquired Amortizable Intangible Assets Amortized Over Estimated Useful Lives of Assets (Details)	12 Months Ended
	Apr. 30, 2020
Developed technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of assets	4 years
Developed technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of assets	5 years
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of assets	4 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of assets	4 years