Net Loss 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, 2022	Jul. 31, 2021
Numerator
Net loss attributable to common stockholders	$ (71,871)	$ (37,459)
Denominator
Basic weighted-average common shares outstanding (in shares)	106,842,000	102,155,000
Diluted weighted-average common shares outstanding (in shares)	106,842,000	102,155,000
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per common shares outstanding (in dollars per share)	$ (0.67)	$ (0.37)
Diluted net loss per common shares outstanding (in dollars per share)	$ (0.67)	$ (0.37)
Class A Common Stock
Denominator
Basic weighted-average common shares outstanding (in shares)	103,342,000	98,655,000
Diluted weighted-average common shares outstanding (in shares)	103,342,000	98,655,000
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per common shares outstanding (in dollars per share)	$ (0.67)	$ (0.37)
Diluted net loss per common shares outstanding (in dollars per share)	$ (0.67)	$ (0.37)
Class B Common Stock
Denominator
Basic weighted-average common shares outstanding (in shares)	3,500,000	3,500,000
Diluted weighted-average common shares outstanding (in shares)	3,500,000	3,500,000
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per common shares outstanding (in dollars per share)	$ (0.67)	$ (0.37)
Diluted net loss per common shares outstanding (in dollars per share)	$ (0.67)	$ (0.37)