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Significant Accounting Policies - Fair values of financial assets of the Company (Details) - USD ($)
Nov. 30, 2021
Feb. 28, 2021
Marketable Securities $ 3,349,962 $ 4,563,470
Level 1    
Marketable Securities 3,349,962 4,261,927
Level 2    
Marketable Securities 301,543
Fair Value, Inputs, Level 3 [Member]    
Marketable Securities