Summary of Significant Accounting Policies - Stock-Based Compensation (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2018 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Total stock-based compensation expense | $ 1,306 | $ 824 | $ 2,613 |
| Executives | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Total stock-based compensation expense | 497 | 778 | 1,754 |
| Executive forfeiture | (823) | ||
| Management | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Total stock-based compensation expense | 76 | ||
| Board of Directors | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Total stock-based compensation expense | $ 733 | $ 869 | $ 859 |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Value of forfeited shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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