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Summary of Significant Accounting Policies and Related Information - License Agreements, Trademarks, Patents, and Other Intangible Assets (Details) - agreement | 12 Months Ended
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Feb. 28, 2022 | Feb. 28, 2021 | Feb. 29, 2020
Foreign Currency Risk and Currency Exchange Uncertainties |  |  |
Number of license agreements | 2 |  |
Patents | Maximum |  |  |
Foreign Currency Risk and Currency Exchange Uncertainties |  |  |
Weighted average life (in years) | 14 years |  |
Patents | Minimum |  |  |
Foreign Currency Risk and Currency Exchange Uncertainties |  |  |
Weighted average life (in years) | 12 years |  |
Net sales revenue | Net sales revenue subject to trademark license agreements | Trademark, Licensing, And Royalty Agreements |  |  |
Foreign Currency Risk and Currency Exchange Uncertainties |  |  |
Concentration risk percentage | 30.00% | 41.00% | 43.00%
Net sales revenue | Net sales revenue subject to trademark license agreements | Licensor One |  |  |
Foreign Currency Risk and Currency Exchange Uncertainties |  |  |
Concentration risk percentage | 13.00% |  |
Net sales revenue | Net sales revenue subject to trademark license agreements | Licensor Two |  |  |
Foreign Currency Risk and Currency Exchange Uncertainties |  |  |
Concentration risk percentage | 10.00% |  |

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