Warrants (Details 1) - shares
|
3 Months Ended |
Feb. 29, 2020 |
Feb. 28, 2019 |
| Outstanding, Beginning |
23,740,290
|
26,533,624
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
(1,616,667)
|
(2,643,334)
|
| Outstanding, Ending |
22,123,623
|
23,890,290
|
| June 2016 Warrants |
|
|
| Outstanding, Beginning |
277,478
|
277,478
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
0
|
0
|
| Outstanding, Ending |
277,478
|
277,478
|
| October 2017 Warrants |
|
|
| Outstanding, Beginning |
181,818
|
181,818
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
0
|
0
|
| Outstanding, Ending |
181,818
|
181,818
|
| October 2017 Placement Agent Warrants |
|
|
| Outstanding, Beginning |
18,181
|
18,181
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
0
|
0
|
| Outstanding, Ending |
18,181
|
18,181
|
| March 2018 Warrants |
|
|
| Outstanding, Beginning |
441,666
|
441,666
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
0
|
0
|
| Outstanding, Ending |
441,666
|
441,666
|
| March 2018 Placement Agent Warrants |
|
|
| Outstanding, Beginning |
44,166
|
44,166
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
0
|
0
|
| Outstanding, Ending |
44,166
|
44,166
|
| 2018 Firm Warrants |
|
|
| Outstanding, Beginning |
20,000,000
|
20,000,000
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
0
|
0
|
| Outstanding, Ending |
20,000,000
|
20,000,000
|
| 2018 Pre-Funded Warrants |
|
|
| Outstanding, Beginning |
1,616,667
|
4,410,001
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
(1,616,667)
|
(2,643,334)
|
| Outstanding, Ending |
0
|
1,766,667
|
| October 2018 Placement Agent Warrants |
|
|
| Outstanding, Beginning |
1,160,314
|
1,160,314
|
| Issued |
0
|
0
|
| Expired |
0
|
0
|
| Exercised |
0
|
0
|
| Outstanding, Ending |
1,160,314
|
1,160,314
|