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Stock-Based Compensation (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2019 USD ($) award shares | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) tranche award $ / shares shares | Jun. 30, 2018 USD ($) | Sep. 30, 2018
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Number of awards forfeited | award | 2 |  | 2 |  |
2016 Plan |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Aggregate number of shares that may be awarded (in shares) | 646,000 |  | 646,000 |  |
Exercise period for shares awarded under plan |  |  | 10 years |  |
Number of tranches in award | tranche |  |  | 2 |  |
Share-based compensation expense (benefit) | $ | $ (59) | $ 186 | $ 367 | $ 428 |
Outstanding share awards that may be awarded (in shares) | 118,000 |  | 118,000 |  |
Outstanding share awards earned and issued at greater than the target number of shares |  |  | 200.00% |  |
Total unrecognized compensation cost related to performance and restricted shares | $ | $ 714 |  | $ 714 |  |
Period of recognized compensation cost (in years) |  |  | 1 year 5 months |  |
2016 Plan | Performance shares |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Performance period (in years) |  |  | 3 years |  |
Shares granted in period (in shares) |  |  | 87,000 |  |
Shares forfeited in period (in shares) |  |  | 7,000 |  |
2016 Plan | Performance shares | Minimum |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Common shares earned pursuant to award (in shares) |  |  | 0 |  |
2016 Plan | Performance shares | Maximum |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Common shares earned as percentage of initial target number shares awarded |  |  | 200.00% |  |
2016 Plan | Performance shares, 2018 award year |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Common shares earned as percentage of initial target number shares awarded |  |  | 0.00% |  | 100.00%
Share-based compensation expense (benefit) | $ |  |  | $ (256) |  |
2016 Plan | Performance and Restricted Shares |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Shares granted in period (in shares) |  |  | 134,000 |  |
Shares granted in period, grant date fair value (in dollars per share) | $ / shares |  |  | $ 4.73 |  |
Vesting period (in years) |  |  | 3 years |  |
2016 Plan | Restricted Stock |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Shares granted in period (in shares) |  |  | 47,000 |  |
Shares granted in period, grant date fair value (in dollars per share) | $ / shares |  |  | $ 3.15 |  |
Vesting period (in years) |  |  | 1 year |  |
Shares vested per one award (in shares) |  |  | 77,000 |  |
Shares forfeited in period (in shares) |  |  | 4,000 |  |
2016 Plan | Restricted Stock | Director |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Shares granted in period (in shares) |  |  | 61,000 |  |
2016 Plan | Restricted Stock | Minimum |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 1 year |  |
2016 Plan | Restricted Stock | Maximum |  |  |  |  |
Schedule Of Earnings Per Share Basic And Diluted [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 3 years |  |

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