Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) |
Nov. 30, 2021 |
Feb. 28, 2021 |
|---|---|---|
| Notes receivable, current portion of the valuation allowance | $ 38,725 | $ 32,571 |
| Notes receivable, noncurrent portion of valuation allowance | $ 73,562 | $ 79,716 |
| Preferred stock, shares authorized (in shares) | 250,000 | 250,000 |
| Preferred stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Preferred stock, shares issued (in shares) | 0 | 0 |
| Preferred stock, shares outstanding (in shares) | 0 | 0 |
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Common stock, shares authorized (in shares) | 46,000,000 | 46,000,000 |
| Common stock, shares issued (in shares) | 6,176,697 | 6,074,293 |
| Common stock, shares outstanding (in shares) | 6,176,697 | 6,074,293 |
| Series A Preferred Stock [Member] | ||
| Preferred stock, shares authorized (in shares) | 50,000 | 50,000 |
| Undesignated Series [Member] | ||
| Preferred stock, shares authorized (in shares) | 200,000 | 200,000 |