Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Basis of Presentation - Disaggregated Revenue (Details)

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Description of Business and Basis of Presentation - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Disaggregation Of Revenue [Line Items]        
Total Revenues $ 55,944 $ 50,515 $ 69,676 $ 61,520
Alico Citrus        
Disaggregation Of Revenue [Line Items]        
Total Revenues 55,268 49,801 68,194 59,976
Water Resources and Other Operations        
Disaggregation Of Revenue [Line Items]        
Total Revenues 676 714 1,482 1,544
Early and Mid-Season | Alico Citrus        
Disaggregation Of Revenue [Line Items]        
Total Revenues 21,749 22,237 31,064 31,303
Valencias | Alico Citrus        
Disaggregation Of Revenue [Line Items]        
Total Revenues 28,014 25,810 28,014 25,810
Fresh Fruit | Alico Citrus        
Disaggregation Of Revenue [Line Items]        
Total Revenues 176 802 585 1,537
Grove Management Services | Alico Citrus        
Disaggregation Of Revenue [Line Items]        
Total Revenues 4,979 373 8,071 678
Other | Alico Citrus        
Disaggregation Of Revenue [Line Items]        
Total Revenues 350 579 460 648
Other | Water Resources and Other Operations        
Disaggregation Of Revenue [Line Items]        
Total Revenues 53 35 132 202
Land and Other Leasing | Water Resources and Other Operations        
Disaggregation Of Revenue [Line Items]        
Total Revenues $ 623 $ 679 $ 1,350 $ 1,342