CASH, CASH EQUIVALENTS AND INVESTMENTS - Investments (Details) - USD ($) $ in Thousands	Apr. 30, 2025	Jan. 31, 2025
CASH, CASH EQUIVALENTS AND INVESTMENTS
Short-term investments	$ 115,048	$ 153,129
Available-for-sale securities	242,158	226,745
Total investments	$ 357,206	$ 379,874

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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+ Details