Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Schedule of Disaggregation of Revenue (Details)

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Basis of Presentation - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Disaggregation of Revenue [Line Items]        
Total Revenues $ 48,521 $ 35,600 $ 63,300 $ 53,133
Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 47,823 34,709 61,720 51,788
Water Resources and Other Operations        
Disaggregation of Revenue [Line Items]        
Total Revenues 698 891 1,580 1,345
Early and Mid-Season | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 27,929 8,839 39,574 24,256
Valencias | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 18,746 24,598 18,746 24,598
Fresh Fruit | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 671 418 2,577 1,506
Other | Alico Citrus        
Disaggregation of Revenue [Line Items]        
Total Revenues 477 854 823 1,428
Other | Water Resources and Other Operations        
Disaggregation of Revenue [Line Items]        
Total Revenues 40 51 188 258
Land and other leasing | Water Resources and Other Operations        
Disaggregation of Revenue [Line Items]        
Total Revenues $ 658 $ 840 $ 1,392 $ 1,087