Alico, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Narrative (Details)

Stockholders' Equity - Narrative (Details) - USD ($)							3 Months Ended		12 Months Ended
Stockholders' Equity - Narrative (Details) - USD ($)	Nov. 05, 2021	Oct. 15, 2021	Nov. 10, 2020	Oct. 11, 2019	Oct. 25, 2018	Sep. 07, 2018	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2021	Feb. 27, 2015
Class Of Stock [Line Items]
Stock compensation expense							$ 179,000	$ 222,000
Restricted Stock
Class Of Stock [Line Items]
Stock compensation expense							136,000	25,000
Unrecognized expense							72,000			$ 144,000
Weighted average fair value (in dollars per share)	$ 37.13	$ 34.41	$ 31.20
Options
Class Of Stock [Line Items]
Stock compensation expense							60,000	$ 60,000
Unrecognized expense							$ 73,000			$ 134,000
Unrecognized compensation cost, expected recognition period								1 year
2015 Option Grants
Class Of Stock [Line Items]
Number of shares authorized to be repurchased (up to)											1,250,000
2015 Option Grants \| Restricted Stock
Class Of Stock [Line Items]
Number of restricted shares awarded	2,224	2,500	5,885
2015 Option Grants \| Minimum
Class Of Stock [Line Items]
Award vesting period							1 year
2015 Option Grants \| Maximum
Class Of Stock [Line Items]
Award vesting period							6 years
2020 Option Grants
Class Of Stock [Line Items]
Granted (in shares)				118,000
Shares issued (in dollars per share)				$ 33.96
Percentage of options									25.00%
Period following an executive's termination of employment for a number of reasons				18 months
Period following an executive's termination of employment without cause				12 months
2020 Option Grants \| Tranche One
Class Of Stock [Line Items]
Percentage of options				25.00%
Period of consecutive trading days				20 days
Amount per share (in dollars per share)				$ 35.00
2020 Option Grants \| Tranche Two
Class Of Stock [Line Items]
Percentage of options				25.00%
Period of consecutive trading days				20 days
Amount per share (in dollars per share)				$ 40.00
2020 Option Grants \| Tranche Three
Class Of Stock [Line Items]
Percentage of options				25.00%
Period of consecutive trading days				20 days
Amount per share (in dollars per share)				$ 45.00
2020 Option Grants \| Tranche Four
Class Of Stock [Line Items]
Percentage of options				25.00%
Period of consecutive trading days				20 days
Amount per share (in dollars per share)				$ 50.00
2020 Option Grants \| Minimum
Class Of Stock [Line Items]
Share price (in dollars per share)									$ 35.00
2020 Option Grants \| Maximum
Class Of Stock [Line Items]
Share price (in dollars per share)								$ 40.00
2019 Option Grants
Class Of Stock [Line Items]
Shares issued (in dollars per share)					$ 33.34
Period following an executive's termination of employment for a number of reasons					18 months
Period following an executive's termination of employment without cause					12 months
2019 Option Grants \| Chief Financial Officer
Class Of Stock [Line Items]
Granted (in shares)					10,000
2019 Option Grants \| Tranche One
Class Of Stock [Line Items]
Period of consecutive trading days					20 days
Amount per share (in dollars per share)					$ 40.00
Number of awards vesting (in shares)					3,333
2019 Option Grants \| Tranche Two
Class Of Stock [Line Items]
Period of consecutive trading days					20 days
Amount per share (in dollars per share)					$ 45.00
Number of awards vesting (in shares)					3,333
2019 Option Grants \| Tranche Three
Class Of Stock [Line Items]
Period of consecutive trading days					20 days
Amount per share (in dollars per share)					$ 50.00
Number of awards vesting (in shares)					3,334
2019 Option Grants \| Maximum
Class Of Stock [Line Items]
Share price (in dollars per share)								$ 40.00
2018 Option Grants
Class Of Stock [Line Items]
Shares issued (in dollars per share)						$ 33.60
Percentage of options								0.00%	25.00%
Period following an executive's termination of employment for a number of reasons						18 months
Period following an executive's termination of employment without cause						12 months
2018 Option Grants \| Chief Financial Officer
Class Of Stock [Line Items]
Granted (in shares)						90,000
2018 Option Grants \| Chief Executive Officer
Class Of Stock [Line Items]
Granted (in shares)						210,000
2018 Option Grants \| Tranche One
Class Of Stock [Line Items]
Percentage of options						25.00%
Period of consecutive trading days						20 days
Amount per share (in dollars per share)						$ 35.00
2018 Option Grants \| Tranche Two
Class Of Stock [Line Items]
Percentage of options						25.00%
Period of consecutive trading days						20 days
Amount per share (in dollars per share)						$ 40.00
2018 Option Grants \| Tranche Three
Class Of Stock [Line Items]
Percentage of options						25.00%
Period of consecutive trading days						20 days
Amount per share (in dollars per share)						$ 45.00
2018 Option Grants \| Tranche Four
Class Of Stock [Line Items]
Percentage of options						25.00%
Period of consecutive trading days						20 days
Amount per share (in dollars per share)						$ 50.00
2018 Option Grants \| Minimum
Class Of Stock [Line Items]
Share price (in dollars per share)									$ 35.00
2018 Option Grants \| Maximum
Class Of Stock [Line Items]
Share price (in dollars per share)								$ 40.00
2020 Option Grants \| Options
Class Of Stock [Line Items]
Grants in period, weighted average (in dollars per share)							$ 3.20