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Cash, Cash Equivalents and Restricted Cash - Amortized Cost, Unrealized Gain (Losses) and Estimated Fair Values (Details) - USD ($) $ in Thousands | Jan. 31, 2023 | Jan. 31, 2022
--- | --- | ---
Cash and Cash Equivalents [Line Items] |  |
Restricted cash | $ 3,700 |
Total cash, cash equivalents, and restricted cash | 66,500 | $ 83,561
Cash |  |
Cash and Cash Equivalents [Line Items] |  |
Cash | 38,789 | 42,500
Money market funds |  |
Cash and Cash Equivalents [Line Items] |  |
Cash equivalents | 8,591 | 25,878
Certificates of deposit |  |
Cash and Cash Equivalents [Line Items] |  |
Cash equivalents | $ 15,420 | $ 15,183

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 21 -URI https://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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