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Inventories - Components of Inventory (Detail) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
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Inventory Disclosure [Abstract] |  |
Product | $ 17,912 | $ 33,994
Parts and equipment | 23,675 | 22,469
Total inventory | $ 41,587 | $ 56,463

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