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Customer Concentrations and Foreign Sales (Tables) | 12 Months Ended
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Feb. 28, 2021
Segment Reporting [Abstract] |
Export sales to customers located outside the United States |
|  | February 28, 2021 |  |  | February 29, 2020 |
Asia Pacific (APAC) |  |  | 4,171,000 |  |  |  | 4,817,000 |
Europe, Middle East, Asia (EMEA) |  |  | 4,287,000 |  |  |  | 4,512,000 |
Latin America |  |  | 1,220,000 |  |  |  | 1,520,000 |
|  | $ | 9,678,000 |  |  | $ | 10,849,000 |

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