Business Information - Narrative (Details) $ in Thousands	12 Months Ended
Sep. 30, 2022 USD ($) separate_bargaining_unit hourly_plant_personnel Segment	Sep. 30, 2021 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments \| Segment	1
Identifiable assets	$ 58,487	$ 63,095
Number of employees represented by separate collective bargaining agreements \| hourly_plant_personnel	179
Number of collective bargain agreements \| separate_bargaining_unit	3
Number of units entered into early negotiations and ratification of CBA \| separate_bargaining_unit	2
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Identifiable assets	$ 51,801	54,109
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Identifiable assets	6,686	8,986
Maniago
Revenues from External Customers and Long-Lived Assets [Line Items]
Identifiable assets	$ 15,219	$ 19,586
Sales Revenue, Net \| Geographic Concentration Risk \| United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of concentration risk	72.00%	66.00%
Sales Revenue, Net \| Geographic Concentration Risk \| Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of concentration risk	19.00%	18.00%
Sales Revenue, Net \| Geographic Concentration Risk \| Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of concentration risk	6.00%	8.00%

Number Of Units, Early Negotiations And Ratification For Collective Bargaining Agreements

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Number of Collective Bargain Units

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Number of Employees Represented by Separate Collective Bargaining Units

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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