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Stock-Based Compensation (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) shares | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) tranche $ / shares shares | Jun. 30, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation arrangement by Share-based payment award, compensation expense recognition, percentage of target |  |  | 50.00% |
2016 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Aggregate number of shares that may be awarded (in shares) | 1,196,000 |  | 1,196,000 |
Exercise period for shares awarded under plan |  |  | 10 years |
Outstanding share awards that may be awarded (in shares) | 442,000 |  | 442,000 |
Outstanding share awards earned and issued at greater than the target number of shares |  |  | 200.00% |
Outstanding share awards earned and issued at greater than the target number of shares next fiscal year |  |  | 150.00% |
Share-based compensation expense (benefit) | $ | $ 85 | $ 37 | $ 378 | $ 262
Total unrecognized compensation cost related to performance and restricted shares | $ | $ 505 |  | $ 505 |
Period of recognized compensation cost |  |  | 1 year 3 months 18 days |
2016 Plan | Key employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of tranches in award | tranche |  |  | 2 |
2016 Plan | Performance shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance period |  |  | 3 years |
2016 Plan | Performance shares | Key employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares granted in period (in shares) |  |  | 71,000 |
2016 Plan | Performance shares | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Common shares earned pursuant to award (in shares) |  |  | 0 |
2016 Plan | Performance shares | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Common shares earned as percentage of initial target number shares awarded |  |  | 200.00% |
Common shares earned as percentage of initial target number shares awarded next fiscal year |  |  | 150.00% |
2016 Plan | Restricted shares | Key employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares granted in period (in shares) |  |  | 49,000 |
2016 Plan | Restricted shares | Non-employee directors |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 1 year |
Shares granted in period (in shares) |  |  | 30,000 |
Shares granted in period, grant date fair value (in dollars per share) | $ / shares |  |  | $ 9.08 |
Vested in period (in shares) |  |  | 57,000 |
2016 Plan | Restricted shares | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 1 year |
2016 Plan | Restricted shares | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 3 years |
2016 Plan | Performance and Restricted Shares | Key employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 3 years |
Shares granted in period (in shares) |  |  | 120,000 |
Shares granted in period, grant date fair value (in dollars per share) | $ / shares |  |  | $ 3.74 |

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