Note 3 - Revenue Recognition - Contract Balances Subject to ASC 606 (Details) - USD ($) |
Aug. 31, 2020 |
Dec. 01, 2019 |
Nov. 30, 2019 |
|---|---|---|---|
| Accounts receivable | $ 69,744 | $ 58,853 | |
| Total Assets | 69,744 | 58,853 | $ 58,853 |
| Contract liabilities - current | 547,493 | 622,724 | |
| Contract liabilities - long-term | 96,100 | 80,110 | |
| Total Contract Liabilities | $ 643,593 | $ 702,834 | $ 702,834 |