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Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Jan. 31, 2024	Apr. 30, 2023	Jan. 31, 2023
Cash equivalents:
Restricted cash	$ 3,700	$ 3,700
Total cash, cash equivalents, and restricted cash	61,158	60,939	$ 65,988	$ 66,500
Cash
Debt Securities, Available-for-sale [Line Items]
Cash	32,323	45,297
Money market funds
Cash equivalents:
Cash equivalents	$ 25,135	$ 11,942

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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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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