Note 6 - Inventories - Schedule of Inventory (Details) - USD ($) |
Feb. 28, 2026 |
Feb. 28, 2025 |
|---|---|---|
| Inventory, Gross | $ 9,166,000 | $ 8,396,000 |
| Inventory, Valuation Reserves | (5,034,000) | (4,956,000) |
| Inventory, Net | 4,132,000 | 3,440,000 |
| Raw Materials [Member] | ||
| Inventory, Gross | 3,275,000 | 2,287,000 |
| Inventory, Valuation Reserves | (534,000) | (463,000) |
| Inventory, Net | 2,741,000 | 1,824,000 |
| Work-in-process [Member] | ||
| Inventory, Gross | 5,245,000 | 5,171,000 |
| Inventory, Valuation Reserves | (4,017,000) | (4,001,000) |
| Inventory, Net | 1,228,000 | 1,170,000 |
| Finished Goods [Member] | ||
| Inventory, Gross | 646,000 | 938,000 |
| Inventory, Valuation Reserves | (483,000) | (492,000) |
| Inventory, Net | $ 163,000 | $ 446,000 |