Consolidated Statements of Shareholders’ Equity - USD ($) $ in Thousands	Total	Ordinary Shares	Treasury Shares	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance (in shares) at Apr. 30, 2022		94,174,914
Beginning balance at Apr. 30, 2022	$ 415,433	$ 990	$ (369)	$ 1,250,108	$ (18,130)	$ (817,166)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon exercise of stock options (in shares)		1,127,036
Issuance of ordinary shares upon exercise of stock options	17,471	$ 12		17,459
Issuance of ordinary shares upon release of restricted stock units (in shares)		2,064,997
Issuance of ordinary shares upon release of restricted stock units	0	$ 22		(22)
Stock-based compensation	204,039			204,039
Net (loss) income	(236,161)					(236,161)
Other comprehensive loss	(1,885)				(1,885)
Ending balance (in shares) at Apr. 30, 2023		97,366,947
Ending balance at Apr. 30, 2023	398,897	$ 1,024	(369)	1,471,584	(20,015)	(1,053,327)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon exercise of stock options (in shares)		1,292,375
Issuance of ordinary shares upon exercise of stock options	20,919	$ 14		20,905
Issuance of ordinary shares upon release of restricted stock units (in shares)		2,701,448
Issuance of ordinary shares upon release of restricted stock units	0	$ 28		(28)
Issuance of ordinary shares under employee stock purchase plan (in shares)		345,165
Issuance of ordinary shares under employee stock purchase plan	19,135	$ 4		19,131
Stock-based compensation	239,137			239,137
Net (loss) income	61,720					61,720
Other comprehensive loss	(1,623)				(1,623)
Ending balance (in shares) at Apr. 30, 2024		101,705,935
Ending balance at Apr. 30, 2024	738,185	$ 1,070	(369)	1,750,729	(21,638)	(991,607)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of ordinary shares upon exercise of stock options (in shares)		791,874
Issuance of ordinary shares upon exercise of stock options	17,854	$ 9		17,845
Issuance of ordinary shares upon release of restricted stock units (in shares)		2,672,842
Issuance of ordinary shares upon release of restricted stock units	0	$ 29		(29)
Issuance of ordinary shares under employee stock purchase plan (in shares)		364,236
Issuance of ordinary shares under employee stock purchase plan	23,093	$ 4		23,089
Stock-based compensation	257,782			257,782
Net (loss) income	(108,114)					(108,114)
Other comprehensive loss	(1,566)				(1,566)
Ending balance (in shares) at Apr. 30, 2025		105,534,887
Ending balance at Apr. 30, 2025	$ 927,234	$ 1,112	$ (369)	$ 2,049,416	$ (23,204)	$ (1,099,721)