Detail of Selected Balance Sheet Accounts - Property, Plant and Equipment (Details) - USD ($) $ in Thousands |
Mar. 31, 2025 |
Sep. 30, 2024 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | $ 255,656 | $ 252,295 |
| Less: Accumulated depreciation | (150,254) | (148,874) |
| Total property, plant and equipment, net | 105,402 | 103,421 |
| Land | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 23,754 | 24,110 |
| Buildings and improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 124,588 | 127,094 |
| Machinery and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 95,121 | 94,889 |
| Furniture and fixtures | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 2,830 | 2,885 |
| Construction in process | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | $ 9,363 | $ 3,317 |