Alico, Inc. Annual report pursuant to Section 13 and 15(d)

Assets Held for Sale - Narrative (Details)

Assets Held for Sale - Narrative (Details) - USD ($)									12 Months Ended
Assets Held for Sale - Narrative (Details) - USD ($)	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