Share-Based Compensation - Stock option plan (Details) |
12 Months Ended | ||
---|---|---|---|
Sep. 30, 2018
USD ($)
item
|
Sep. 30, 2017
USD ($)
|
Sep. 30, 2016
USD ($)
|
|
Share-based compensation | |||
Share-based compensation expense | $ 200,000 | $ 203,000 | $ 251,000 |
Income tax effect recognized as a credit to additional paid-in capital related to share-based compensation | $ 0 | 0 | (8,000) |
Number of share-based compensation plans maintained by the company | item | 3 | ||
2009 Plan | |||
Share-based compensation | |||
Share-based compensation expense | $ 0 | $ 0 | $ 68,000 |
2009 Plan | Options | |||
Share-based compensation | |||
Unrecognized compensation cost, related to non-vested stock options | $ 0 |