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Acquisitions and Dispositions - Acquisition of Citrus Grove - TRB (Details) |  | 12 Months Ended
--- | --- | ---
Sep. 04, 2014 USD ($) a | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($)
Business Acquisition [Line Items] |  |  |  |
Gain on bargain purchase |  | $ 0 | $ 1,145,000 | $ 0
TRB |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Area of land acquired (in acres) | a | 1,500 |  |  |
Purchase price | $ 17,130,000 |  |  |
Fixed rate term loans | $ 11,000,000 |  |  |
TRB | Other Income (Expense), Net |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Gain on bargain purchase |  | $ 1,145,300 |  |
TRB | General and Administrative Expense |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Professional and legal costs |  |  | $ 525,000 |

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