Summary of Significant Accounting Policies - Schedule of Revenues Disaggregated by Significant Products and Services (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 1,887	$ 16,894
Alico Citrus
Disaggregation Of Revenue [Line Items]
Total Revenues	883	16,326
Land Management and Other Operations
Disaggregation Of Revenue [Line Items]
Total Revenues	1,004	568
Early and Mid-Season | Alico Citrus
Disaggregation Of Revenue [Line Items]
Total Revenues	282	14,929
Fresh Fruit and Other | Alico Citrus
Disaggregation Of Revenue [Line Items]
Total Revenues	588	626
Grove Management Services | Alico Citrus
Disaggregation Of Revenue [Line Items]
Total Revenues	13	771
Land and Other Leasing | Land Management and Other Operations
Disaggregation Of Revenue [Line Items]
Total Revenues	903	479
Other | Land Management and Other Operations
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 101	$ 89