INVESTMENTS AND FAIR VALUE MEASUREMENTS - NARRATIVE (Details) - USD ($)	Oct. 31, 2024	Apr. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, total aggregated loss	$ 22,000	$ 100,000
Debt securities, available-for-sale, credit-related impairment loss	0	0
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Fair value of available-for-sale debt securities in unrealized loss position, Total	$ 10,800,000	5,600,000
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Fair value of available-for-sale debt securities in unrealized loss position, Total		$ 25,200,000