Inventories - Narrative (Details) - USD ($)  | 
1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|---|
Jul. 31, 2023  | 
Jun. 30, 2023  | 
Jun. 30, 2023  | 
Sep. 30, 2022  | 
Sep. 30, 2021  | 
Sep. 30, 2020  | 
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| Inventory [Line Items] | ||||||
| Casualty loss to reduce the carring value of the unharvested fruit crop | $ 0 | $ 14,900,000 | ||||
| Insurance proceeds for crop claims | $ 16,643,000 | 21,403,000 | ||||
| Proceeds from federal relief grants | 1,315,000 | 1,123,000 | $ 4,299,000 | $ 4,629,000 | ||
| Subsequent Event | ||||||
| Inventory [Line Items] | ||||||
| Insurance proceeds for crop claims | $ 329,000 | |||||
| Year-End Adjustment | ||||||
| Inventory [Line Items] | ||||||
| Inventory casualty loss | $ 0 | $ 1,616,000 | $ 6,676,000 | |||
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- Definition Proceeds From Federal Relief Grants No definition available. 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition The charge against earnings in the period for the uninsured portion of a loss from a fire, explosion, or natural disaster (hurricane, earthquake). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of cash inflow for proceeds from settlement of insurance claim, classified as operating activities. Excludes insurance settlement classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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- Details 
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- Details 
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