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Concentrations of Risk - Additional Information (Detail) - USD ($) | 12 Months Ended
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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%

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