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DEBT - 2021 Notes (Details)			3 Months Ended
DEBT - 2021 Notes (Details)	Apr. 09, 2021 USD ($)	Apr. 06, 2021 USD ($) $ / shares	Apr. 30, 2025 USD ($) $ / shares	Apr. 30, 2024 USD ($)
Debt Instrument [Line Items]
Payments of debt issuance costs			$ 2,166,000	$ 10,000
Series B Preferred Stock \| Series B Private Placement
Debt Instrument [Line Items]
Sale of stock, consideration received on transaction		$ 200,000,000.0
2021 Notes
Debt Instrument [Line Items]
Debt principal amount	$ 315,000,000.0
Coupon interest rate	0.25%
Convertible debt, conversion ratio	0.0161092
Convertible debt, conversion price (in dollars per share) \| $ / shares		$ 62.08	$ 62.08
Payments of debt issuance costs	$ 8,900,000
Effective interest rate (as a percent)			0.83%