Net Loss Per Share Attributable to Common Stockholders - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022
Numerator
Net loss attributable to common stockholders	$ (63,162)	$ (39,447)	$ (203,883)	$ (133,645)
Denominator
Basic weighted-average common stock outstanding (in shares)	110,735	105,093	108,869	103,841
Diluted weighted-average common stock outstanding (in shares)	110,735	105,093	108,869	103,841
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per common stock outstanding (in dollars per share)	$ (0.57)	$ (0.38)	$ (1.87)	$ (1.29)
Diluted net loss per common stock outstanding (in dollars per share)	$ (0.57)	$ (0.38)	$ (1.87)	$ (1.29)
Class A Common Stock
Denominator
Basic weighted-average common stock outstanding (in shares)	107,235	101,593	105,369	100,341
Diluted weighted-average common stock outstanding (in shares)	107,235	101,593	105,369	100,341
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per common stock outstanding (in dollars per share)	$ (0.57)	$ (0.38)	$ (1.87)	$ (1.29)
Diluted net loss per common stock outstanding (in dollars per share)	$ (0.57)	$ (0.38)	$ (1.87)	$ (1.29)
Class B Common Stock
Denominator
Basic weighted-average common stock outstanding (in shares)	3,500	3,500	3,500	3,500
Diluted weighted-average common stock outstanding (in shares)	3,500	3,500	3,500	3,500
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per common stock outstanding (in dollars per share)	$ (0.57)	$ (0.38)	$ (1.87)	$ (1.29)
Diluted net loss per common stock outstanding (in dollars per share)	$ (0.57)	$ (0.38)	$ (1.87)	$ (1.29)