Options (Details 1) - $ / shares |
3 Months Ended | |
|---|---|---|
Feb. 29, 2020 |
Feb. 28, 2019 |
|
| Share-based Payment Arrangement [Abstract] | ||
| Outstanding, beginning of period | 2,353,829 | 555,651 |
| Forfeited | (5,200) | (2,000) |
| Cancelled | (122,653) | 0 |
| Balance at end of period | 2,225,976 | 553,651 |
| Options exercisable, end of year | 1,114,655 | 543,952 |
| Outstanding, beginning of period | $ 8.35 | $ 37.70 |
| Forfeited | .78 | 14.93 |
| Cancelled | .35 | .00 |
| Balance at end of period | 8.80 | 37.54 |
| Options exercisable, end of year | 17.23 | 38.01 |
| Outstanding, beginning of period | 4.30 | 16.69 |
| Forfeited | .40 | 8.19 |
| Cancelled | .22 | .00 |
| Balance at end of period | 4.54 | 16.73 |
| Options exercisable, end of year | $ 8.80 | $ 16.92 |