Subsequent Events (Details) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Jun. 20, 2018
USD ($)
employee
$ / shares
shares
|
May 31, 2018
shares
|
Feb. 28, 2018
$ / shares
shares
|
Nov. 30, 2017
$ / shares
shares
|
|
| Subsequent Event [Line Items] | ||||
| Granted (shares) | shares | 0 | 7,500 | 307,500 | |
| Granted (usd per share) | $ / shares | $ 3.15 | $ 3.30 | ||
| Subsequent Event | ||||
| Subsequent Event [Line Items] | ||||
| Number of employees granted options | employee | 14 | |||
| Granted (shares) | shares | 270,000 | |||
| Granted (usd per share) | $ / shares | $ 2.85 | |||
| Annual award vesting percentage | 20.00% | |||
| Non-Executive Director | Subsequent Event | ||||
| Subsequent Event [Line Items] | ||||
| Annual directors' compensation | $ 20,000 | |||
| Directors' compensation, each meeting attended in person | 1,000 | |||
| Directors' compensation, each meeting attended by telephone | 500 | |||
| Vice Chairman of the Board and Chairman of the Audit Committee | Subsequent Event | ||||
| Subsequent Event [Line Items] | ||||
| Annual directors' compensation | $ 75,000 | |||