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CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Details) - Held-to-maturity Securities | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2022 | Jan. 31, 2022
Cash and Cash Equivalents |  |
Maturity period | 1 year | 1 year
Weighted average annual interest rates of CDs (as a percent) | 0.90% | 0.10%

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- Definition Represents the maturity period of investments. + References No definition available. + Details
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- Definition Weighted average interest rate for certificates of deposit liabilities in banking offices. + References No definition available. + Details
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Namespace Prefix: | agx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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