LONG-TERM DEBT - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 09, 2021
Debt Instrument [Line Items]
Losses on early retirements of debt	$ 0	$ 237
2021 Notes
Debt Instrument [Line Items]
Interest expense at coupon or contractual rate	197	197
Amortization of deferred debt issuance costs	446	443
Total interest expense	643	640
Coupon interest rate			0.25%
Credit Agreement
Debt Instrument [Line Items]
Interest expense at coupon or contractual rate	1,736	1,650
Amortization of deferred debt issuance costs	172	204
Amortization of debt discounts	0	5
Losses on early retirements of debt	0	237
Total interest expense	$ 1,908	$ 2,096