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

Amount of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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