CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY (Parentheticals) - $ / shares |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
Nov. 30, 2021 |
Aug. 31, 2021 |
May 31, 2021 |
Nov. 30, 2020 |
Aug. 31, 2020 |
May 31, 2020 |
|
| Retained Earnings [Member] | ||||||
| Dividends declared | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.06 | $ 0.06 |