Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment by Major Asset Class (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 110,976	$ 110,796
Less: Accumulated depreciation	71,704	68,088
Property, plant and equipment, net	39,272	42,708
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	913	994
Buildings
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	16,553	16,931
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 93,510	$ 92,871