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Detail of Selected Balance Sheet Accounts - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment gross | $ 247,605 | $ 258,117
Less: Accumulated depreciation | (138,148) | (143,745)
Total property, plant and equipment, net | 109,457 | 114,372
Land |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment gross | 22,355 | 22,008
Buildings and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment gross | $ 124,798 | 122,529
Buildings and improvements | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Asset lives | 3 years |
Buildings and improvements | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Asset lives | 39 years |
Machinery and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment gross | $ 96,017 | 108,439
Machinery and equipment | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Asset lives | 3 years |
Machinery and equipment | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Asset lives | 15 years |
Furniture and fixtures |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment gross | $ 3,683 | 3,611
Furniture and fixtures | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Asset lives | 3 years |
Furniture and fixtures | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Asset lives | 10 years |
Construction in process |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment gross | $ 752 | $ 1,530

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