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U. S. GOVERNMENT SECURITIES (Details) - U.S. government securities - USD ($) | Jan. 31, 2021 | Jan. 31, 2020
--- | --- | ---
Carrying Value |  |
Due within one year | $ 9,906,669 | $ 13,332,474
Total | 9,906,669 | 13,332,474
Fair Value, Inputs, Level 1 [Member] |  |
Fair Value |  |
Due within one year | 9,906,847 | 13,337,529
Total | $ 9,906,847 | $ 13,337,529

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