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Cover	12 Months Ended
Cover	Apr. 30, 2023
Cover [Abstract]
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s definitive proxy statement relating to the registrant’s 2023 annual general meeting of shareholders are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. Such definitive proxy statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the registrant’s fiscal year ended April 30, 2023.