CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
Treasury Stock [Member] |
Total |
|---|---|---|---|---|---|
| Balance at Feb. 29, 2020 | $ 2,482,000 | $ 9,843,900 | $ 29,732,200 | $ (12,665,300) | $ 29,392,800 |
| Balance (in Shares) at Feb. 29, 2020 | 12,410,080 | 4,061,429 | |||
| Purchases of treasury stock | $ (75,500) | (75,500) | |||
| Purchases of treasury stock (in Shares) | 17,565 | ||||
| Sales of treasury stock | 5,000 | $ 66,000 | 71,000 | ||
| Sales of treasury stock (in Shares) | (21,167) | ||||
| Dividends declared | (502,200) | (502,200) | |||
| Share-based compensation expense (see Note 6) | 169,000 | 169,000 | |||
| Net earnings | 1,931,100 | 1,931,100 | |||
| Balance at May. 31, 2020 | $ 2,482,000 | 10,017,900 | 31,161,100 | $ (12,674,800) | 30,986,200 |
| Balance (in Shares) at May. 31, 2020 | 12,410,080 | 4,057,827 | |||
| Balance at Feb. 28, 2021 | $ 2,482,000 | 10,863,900 | 39,683,000 | $ (12,769,100) | 40,259,800 |
| Balance (in Shares) at Feb. 28, 2021 | 12,410,080 | 4,063,480 | |||
| Sales of treasury stock | 26,600 | $ 5,400 | 32,000 | ||
| Sales of treasury stock (in Shares) | (1,714) | ||||
| Dividends declared | (834,800) | (834,800) | |||
| Share-based compensation expense (see Note 6) | 261,600 | 261,600 | |||
| Net earnings | 3,438,100 | 3,438,100 | |||
| Balance at May. 31, 2021 | $ 2,482,000 | $ 11,152,100 | $ 42,286,300 | $ (12,763,700) | $ 43,156,700 |
| Balance (in Shares) at May. 31, 2021 | 12,410,080 | 4,061,766 |