Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021	Apr. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 3,400,000	$ 4,100,000	$ 10,400,000	$ 12,200,000
Weighted-average period for amortization of intangible assets			5 years
Goodwill	64,315,000		$ 64,315,000		$ 64,315,000
Adjustments to goodwill			0	$ 0
Goodwill impairment charges	109,300,000		109,300,000
Goodwill gross	$ 173,600,000		$ 173,600,000
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-average period for amortization of intangible assets			5 years
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Weighted-average period for amortization of intangible assets			6 years
Patents, Trademarks, and Trade Names
Finite-Lived Intangible Assets [Line Items]
Weighted-average period for amortization of intangible assets			5 years