Note 8 - Impairment of Long-lived and Intangible Assets (Details Textual) - USD ($) |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
May 31, 2020 |
Nov. 30, 2021 |
Nov. 30, 2020 |
|
| Asset Impairment Charges, Total | $ 544,801 | ||
| General and Administrative Expense [Member] | COVID-19 Pandemic [Member] | |||
| Asset Impairment Charges, Total | $ 545,000 | $ 0 | |