CASH, CASH EQUIVALENTS, AND SHORT-TERM INVESTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2025	Apr. 30, 2024	Jan. 31, 2025
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, cost basis	$ 180,870	$ 236,592	$ 215,707
Cash and cash equivalents, fair value	180,870		215,707
Proceeds from maturities and sales of short-term investments	900	$ 200
Bank time deposits
Cash and Cash Equivalents [Line Items]
Cost Basis	449		1,344
Gross Unrealized Gains	0		0
Gross Unrealized Losses	0		0
Estimated Fair Value	449		1,344
Total short-term investments
Cash and Cash Equivalents [Line Items]
Cost Basis	449		1,344
Gross Unrealized Gains	0		0
Gross Unrealized Losses	0		0
Estimated Fair Value	449		1,344
Cash and bank time deposits
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, cost basis	152,138		159,688
Cash and cash equivalents, fair value	152,138		159,688
Money market funds
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, cost basis	28,483		56,019
Cash and cash equivalents, fair value	28,483		$ 56,019
U.S. Treasury bills
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, cost basis	249
Cash and cash equivalents, fair value	$ 249

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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