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Cash Equivalents and Marketable Securities - Narrative (Details)
6 Months Ended
Oct. 31, 2023
USD ($)
marketable_security
Apr. 30, 2023
marketable_security
Investments, Debt and Equity Securities [Abstract]    
Number of marketable securities in unrealized loss position | marketable_security 216 119
Other-than-temporary impairment loss | $ $ 0