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Assets Held for Sale - Narrative (Details) - USD ($) |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 30, 2018 | Sep. 28, 2018 | May 02, 2018 | Feb. 12, 2018 | Feb. 09, 2018 | Jan. 25, 2018 | Jan. 19, 2018 | Oct. 30, 2017 | Sep. 30, 2019 | Sep. 30, 2018
Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  |  |  |  |  |  |  |  | $ 47,000 |
Discontinued Operations, Disposed of by Sale | Frostproof Parcels |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation | $ 206,000,000 |  |  |  |  |  |  |  |  |
Gain (loss) on disposal of discontinued operation | $ 12,000,000 |  |  |  |  |  |  |  |  |
Discontinued Operations, Disposed of by Sale | Gal Hog |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  |  | $ 7,300,000 |  |  |  |  |  |  |
Gain (loss) on disposal of discontinued operation |  |  | $ 6,709,000 |  |  |  |  |  |  |
Discontinued Operations, Held-for-sale |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment loss |  |  |  |  |  |  |  |  | $ 152,000 | $ 150,000
Chancey Bay | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  |  |  | $ 4,200,000 |  |  |  |  |  |
Gain (loss) on disposal of discontinued operation |  |  |  | (51,000) |  |  |  |  |  |
Disposal group, rent expense |  |  |  | $ 200,000 |  |  |  |  |  |
Nursery - Gainsville | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  |  |  |  | $ 6,500,000 |  |  |  |  |
Gain (loss) on disposal of discontinued operation |  |  |  |  | $ 111,000 |  |  |  |  |
Herd | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  |  |  |  |  | $ 7,800,000 |  |  |  |
Gain (loss) on disposal of discontinued operation |  |  |  |  |  | 1,759,000 |  |  |  |
Disposal group, rent expense |  |  |  |  |  | 100,000 |  |  |  |
East Ranch | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  | $ 1,920,000 |  |  |  |  |  |  |  |
Gain (loss) on disposal of discontinued operation |  | $ 1,759,000 |  |  |  |  |  |  |  |
Disposal group, rent expense |  |  |  |  |  | $ 98,750 |  |  |  |
Trailers | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  |  |  |  |  |  | $ 500,000 |  |  |
Gain (loss) on disposal of discontinued operation |  |  |  |  |  |  | $ 125,000 |  |  |
Disposal group stated percentage |  |  |  |  |  |  | 5.00% |  |  |
Period remaining for amount to be paid |  |  |  |  |  |  | 3 years |  |  |
Fort Myers Property, Florida | Discontinued Operations, Disposed of by Sale | Office Building |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for discontinued operation |  |  |  |  |  |  |  | $ 5,300,000 |  |
Gain (loss) on disposal of discontinued operation |  |  |  |  |  |  |  | $ 1,751,000 |  |
Period of portion of lease back of office space |  |  |  |  |  |  |  | 5 years |  |

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