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Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |
Accounts receivable, net | $ 324,000 | $ 6,105,000 |
Total Revenues | 91,947,000 | 108,564,000 | $ 92,507,000
Alico Citrus |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 89,681,000 | 105,796,000 | 89,369,000
Land Management and Other Operations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 2,266,000 | 2,768,000 | 3,138,000
Early and Mid-Season | Alico Citrus |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 28,287,000 | 31,525,000 | 31,303,000
Valencias | Alico Citrus |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 47,529,000 | 55,918,000 | 50,060,000
Fresh Fruit | Alico Citrus |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 1,256,000 | 608,000 | 2,321,000
Grove Management Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 116,000 | 306,000 |
Operating Revenue | 10,598,000 | 15,752,000 |
Operating expenses | 9,711,000 | 14,342,000 |
Grove Management Services | Alico Citrus |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 11,928,000 | 16,983,000 | 4,599,000
Other | Alico Citrus |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 681,000 | 762,000 | 1,086,000
Other | Land Management and Other Operations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 611,000 | 364,000 | 455,000
Land and other leasing | Land Management and Other Operations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total Revenues | 1,655,000 | 2,404,000 | $ 2,683,000
Citrus trees |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Accounts receivable, net | $ 171,000 | $ 3,161,000 |

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