Detail of Selected Balance Sheet Accounts - Property, Plant and Equipment (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Sep. 30, 2024 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | $ 262,865 | $ 252,295 |
| Less: Accumulated depreciation | (153,489) | (148,874) |
| Total property, plant and equipment, net | 109,376 | 103,421 |
| Land | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 24,113 | 24,110 |
| Buildings and improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 126,741 | 127,094 |
| Machinery and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 97,971 | 94,889 |
| Furniture and fixtures | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 2,877 | 2,885 |
| Construction in process | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | $ 11,163 | $ 3,317 |