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Concentrations of Risk - Additional Information (Detail) - USD ($)
12 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
Concentration Risk [Line Items]      
Cash balances not federally insured $ 66,600,000    
Maximum [Member]      
Concentration Risk [Line Items]      
Maximum insurance available to depositors under the FDIC's general deposit insurance rules 250,000    
Third Party Vendor [Member]      
Concentration Risk [Line Items]      
Amount due to vendor $ 4,700,000 $ 4,000,000  
Customer Concentration Risk [Member] | Net Sales [Member]      
Concentration Risk [Line Items]      
Concentration risk, percentage 5.00%    
Customer Concentration Risk [Member] | Accounts Receivable [Member]      
Concentration Risk [Line Items]      
Concentration risk, percentage 5.00%    
Supplier Concentration Risk [Member] | Paper Products [Member]      
Concentration Risk [Line Items]      
Concentration risk, percentage 41.00% 45.00% 47.00%