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Detail of Selected Balance Sheet Accounts - Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023 | Aug. 15, 2025
Property, Plant and Equipment [Line Items] |  |  |  |
Finance lease, assets | $ 0 | $ 0 |  |
Depreciation and amortization | 7,200,000 | 6,900,000 | $ 8,600,000 |
Purchase price for property, plant and equipment | $ 13,149,000 | 11,983,000 | $ 7,819,000 |
TEXAS | Land and Building |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Asset acquired, property, plant, and equipment |  |  |  | $ 2,800,000
Purchase price for property, plant and equipment |  | $ 5,600,000 |  |

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