Stock-based Compensation - Option Activity (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|---|
Aug. 31, 2018 |
May 31, 2018 |
Feb. 28, 2018 |
May 31, 2018 |
Aug. 31, 2018 |
Nov. 30, 2017 |
Nov. 30, 2016 |
|
| Number of Options | |||||||
| Beginning Balance, Outstanding (shares) | 796,500 | 796,500 | 871,500 | 871,500 | 871,500 | 564,000 | |
| Granted (shares) | 420,000 | 0 | 7,500 | 307,500 | |||
| Exercised (shares) | 0 | 0 | 0 | 0 | |||
| Cancelled or Forfeited (shares) | 20,000 | 0 | 82,500 | 0 | |||
| Ending Balance, Outstanding (shares) | 1,196,500 | 796,500 | 796,500 | 796,500 | 1,196,500 | 871,500 | 564,000 |
| Weighted-Average Exercise Price | |||||||
| Beginning Balance, Outstanding (usd per share) | $ 3.26 | $ 3.26 | $ 3.27 | $ 3.27 | $ 3.27 | $ 3.25 | |
| Granted (usd per share) | 2.85 | 3.15 | 3.30 | ||||
| Cancelled or Forfeited (usd per share) | 3.30 | 3.35 | |||||
| Ending Balance, Outstanding (usd per share) | $ 3.09 | $ 3.26 | $ 3.26 | $ 3.26 | $ 3.09 | $ 3.27 | $ 3.25 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] | |||||||
| Weighted-Average Remaining Term (years) | 6 years | 5 years 9 months 18 days | 7 years 3 months 18 days | 6 years | 5 years 9 months 18 days | ||
| Aggregate Intrinsic Value | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 |