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, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Disaggregation of Revenue [Line Items]        
Total Revenues $ 50,515 $ 48,521 $ 61,520 $ 63,300
Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 49,801 47,823 59,976 61,720
Water Resources and Other Operations        
Disaggregation of Revenue [Line Items]        
Total Revenues 714 698 1,544 1,580
Early and Mid-Season | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 22,237 27,929 31,303 39,574
Valencias | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 25,810 18,746 25,810 18,746
Fresh Fruit | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 802 671 1,537 2,577
Other | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 952 477 1,326 823
Other | Water Resources and Other Operations        
Disaggregation of Revenue [Line Items]        
Total Revenues 35 40 202 188
Land and Other Leasing | Water Resources and Other Operations        
Disaggregation of Revenue [Line Items]        
Total Revenues $ 679 $ 658 $ 1,342 $ 1,392