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Stock Options (Details 1) - $ / shares
6 Months Ended
Aug. 31, 2021
May 31, 2021
Feb. 28, 2021
Stock Options      
Range of exercise prices $ 17    
Stock options Outstanding      
Number of options 318,662 318,662 301,015
Weighted average remaining contractual life (years) 3 years 8 months 12 days    
Weighted average exercise price $ 17    
Exercisable      
Number of options 318,662    
Weighted average exercise prices   $ 17