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Summary of Significant Accounting Policies and Related Information - Receivables (Details) - Gross trade receivables - Customer concentration risk
12 Months Ended
Feb. 28, 2022
Feb. 28, 2021
Customer One    
Receivables    
Concentration risk percentage 23.00% 18.00%
Customer Two    
Receivables    
Concentration risk percentage 17.00% 16.00%
Customer Three    
Receivables    
Concentration risk percentage 9.00% 15.00%
Five top customers    
Receivables    
Concentration risk percentage 55.00% 58.00%