Net (Loss) Income Per Share Attributable to Common Stockholders - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Numerator
Net (loss) income attributable to common stockholders	$ (37,459)	$ 150
Class A Common Stock
Denominator
Weighted-average common shares outstanding, basic (in shares)	98,655,000	30,624,000
Weighted-average common shares outstanding, diluted (in shares)	98,655,000	30,624,000
Basic and diluted net (loss) income per share attributable to common stockholders
Net (loss) income per common shares outstanding, basic (in dollars per share)	$ (0.37)	$ 0.00
Net (loss) income per common shares outstanding, diluted (in dollars per share)	$ (0.37)	$ 0.00
Class A-1 Common Stock
Denominator
Weighted-average common shares outstanding, basic (in shares)	0	6,667,000
Weighted-average common shares outstanding, diluted (in shares)	0	6,667,000
Basic and diluted net (loss) income per share attributable to common stockholders
Net (loss) income per common shares outstanding, basic (in dollars per share)	$ 0	$ 0.00
Net (loss) income per common shares outstanding, diluted (in dollars per share)	$ 0	$ 0.00
Class B Common Stock
Denominator
Weighted-average common shares outstanding, basic (in shares)	3,500,000	0
Weighted-average common shares outstanding, diluted (in shares)	3,500,000	0
Basic and diluted net (loss) income per share attributable to common stockholders
Net (loss) income per common shares outstanding, basic (in dollars per share)	$ (0.37)	$ 0.00
Net (loss) income per common shares outstanding, diluted (in dollars per share)	$ (0.37)	$ 0.00