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SIGNIFICANT ACCOUNTING POLICIES - Fair values of financial assets of the Company (Details) - USD ($) | 12 Months Ended
--- | ---
Feb. 28, 2023 | Feb. 28, 2022
Marketable Securities | $ 8,090,000 | $ 5,867,990
Uncertain tax positions | $ 0 | $ 0
Useful life of intangible assets | 17 years | 12 years
Accumulated amortization of patents | $ 202,681 | $ 192,490
Annual amortization expense this year | 11,000 |
Annual amortization expense year two | 11,000 |
Annual amortization expense year three | 11,000 |
Annual amortization expense year four | 11,000 |
Annual amortization expense year five | $ 11,000 |
Estimated useful life | 40 years |
Impairment losses | $ 0 | 0
Fair Value, Inputs, Level 1 [Member] |  |
Marketable Securities | 7,361,000 | 5,716,338
Fair Value, Inputs, Level 2 [Member] |  |
Marketable Securities | 729,000 | 151,652
Fair Value, Inputs, Level 3 [Member] |  |
Marketable Securities |  |

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