Ordinary Shares - Additional Information (Details)	12 Months Ended
	Apr. 30, 2025 € / shares	Apr. 30, 2025 USD ($) shares	Apr. 30, 2024 shares	Oct. 10, 2018 shares
Class of Stock [Line Items]
Ordinary shares, shares authorized (in shares)		165,000,000
Ordinary shares, voting rights	one vote per ordinary share
Dividends declared | $		$ 0
Convertible Preference Shares
Class of Stock [Line Items]
Preference shares, shares authorized (in shares)		165,000,000	165,000,000	165,000,000
Preference shares, shares issued (in shares)		0	0
Preference shares, shares outstanding (in shares)		0	0
Maximum
Class of Stock [Line Items]
Ordinary shares, par value (in € / shares) | € / shares	€ 0.01