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

Amount of property, plant, and equipment acquired in business combination and recognized at acquisition date.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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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.

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