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Detail of Selected Balance Sheet Accounts - Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Sep. 30, 2023
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 246,536 $ 243,312
Less: Accumulated depreciation (150,068) (145,687)
Total property, plant and equipment, net 96,468 97,625
Land    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 21,563 21,526
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 123,687 121,454
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 95,064 92,477
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 3,795 3,726
Construction in process    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 2,427 $ 4,129