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Inventories - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Inventory Disclosure [Abstract] |  |  |
Inventory net realizable value adjustment | $ 1,616 | $ 6,676 | $ 0
Casualty loss due to Hurricane | 14,900 |  |
Proceeds from insurance settlement for crop claims | 27,389 |  |
Proceeds from insurance settlement, property and casualty damage claims | 839 |  |
Proceeds from federal relief grants | $ 1,315 | $ 1,123 | $ 4,299

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