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Significant Accounting Policies - Fair values of financial assets of the Company (Details) - USD ($)
Aug. 31, 2020
Feb. 29, 2020
Marketable Securities $ 3,852,601 $ 4,219,240
Quoted Prices in Active Markets (Level 1)    
Marketable Securities 3,401,677 3,565,629
Fair Value Inputs (Level 2)    
Marketable Securities 450,924 653,611
Fair Value Inputs (Level 3)    
Marketable Securities