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WARRANTY LIABILITY - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024
Product Warranty Liability [Line Items] |  |
Current portion of warranty | $ 10,143 | $ 13,050
Product warranty accrual, noncurrent | $ 1,239 | $ 1,239
Home and Building Products | Minimum |  |
Product Warranty Liability [Line Items] |  |
Product warranty period | 1 year |
Home and Building Products | Maximum |  |
Product Warranty Liability [Line Items] |  |
Product warranty period | 10 years |
Consumer and Professional Products |  |
Product Warranty Liability [Line Items] |  |
Product warranty period | 90 days |
Consumer and Professional Products | Minimum |  |
Product Warranty Liability [Line Items] |  |
Product warranty period | 1 year |
Consumer and Professional Products | Maximum |  |
Product Warranty Liability [Line Items] |  |
Product warranty period | 10 years |

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