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GOODWILL AND INTANGIBLES - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Goodwill [Line Items] |  |  |
Goodwill | $ 192,917 | $ 329,393 | $ 327,864
Goodwill, impairment loss | $ 136,612 |  |
Goodwill Impairment Loss Statement of Income or Comprehensive Income {Extensible Enumeration} | goodwill impairment |  |
Impairment Of Intangible Asset Indefinite Lived Excluding Goodwill Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag |  | impairment charge |
Foreign currency translations adjustments | $ 1,169 |  |
Amortization expense | 23,280 | $ 22,803 | 22,389
Amortization expense estimated for 2026 | 23,600 |  |
Amortization expense estimated for 2027 | 23,600 |  |
Amortization expense estimated for 2028 | 23,600 |  |
Amortization expense estimated for 2029 | 23,500 |  |
Amortization expense estimated for 2030 | 23,300 |  |
Amortization expense estimated thereafter | 186,545 |  |
Consumer and Professional Products |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 1,664 | 138,140 | 136,611
Goodwill, impairment loss | 136,612 | 136,612 |
Impairment of indefinite-lived intangible assets | $ 107,000 | $ 109,200 | $ 109,200

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