Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (29,158)	$ (49,973)	$ (48,159)	$ (91,742)
Other comprehensive income (loss):
Foreign currency translation adjustments	(479)	(1,433)	(10,537)	(1,051)
Other comprehensive loss	(479)	(1,433)	(10,537)	(1,051)
Total comprehensive loss	$ (29,637)	$ (51,406)	$ (58,696)	$ (92,793)