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		6 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Numerator
Net loss attributable to common stockholders	$ (69,780)	$ (68,850)	$ (134,138)	$ (140,721)
Denominator
Basic weighted-average Class A and Class B common shares outstanding (in shares)	118,656	108,876	117,125	107,885
Diluted weighted-average Class A and Class B common shares outstanding (in shares)	118,656	108,876	117,125	107,885
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per Class A and Class B common shares outstanding (in dollars per share)	$ (0.59)	$ (0.63)	$ (1.15)	$ (1.30)
Diluted net loss per Class A and Class B common shares outstanding (in dollars per share)	$ (0.59)	$ (0.63)	$ (1.15)	$ (1.30)