Summary of Significant Accounting Policies - Equity Method Investments and Variable Interest Entities (Details) $ in Thousands |
1 Months Ended | 3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
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May 31, 2010
USD ($)
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Sep. 30, 2016
USD ($)
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Sep. 30, 2018
USD ($)
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Sep. 30, 2017
USD ($)
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Sep. 30, 2016
USD ($)
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| Schedule of Equity Method Investments [Line Items] | |||||
| Limited partner equity interest (as a percent) | 50.00% | ||||
| Net investment gain (loss) recognized | $ 8 | $ (202) | $ (103) | ||
| Share of distributions | $ 171 | $ 25 | $ 324 | ||
| Magnolia | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Limited partner equity interest (as a percent) | 39.00% | ||||
| Investment amount | $ 12,150 | ||||
| Minimum percentage of certificate face amount | 0.05 | ||||
| Acquisition fee (as a percent) | 0.01 | ||||
| X | ||||||||||
- Definition Delinquent Tax Rate, Minimum, Percent No definition available.
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| X | ||||||||||
- Definition Equity Method Investment, Acquisition Fee, Percentage No definition available.
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| X | ||||||||||
- Definition Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Details
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