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GOODWILL AND OTHER INTANGIBLES (Details) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2019 USD ($) segment | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($)
Goodwill [Line Items] |  |  |
Number of Reportable Segments | segment | 3 |  |
Reallocation of Goodwill | $ 0 |  |
Amortization expense | 9,922 | $ 9,070 | $ 6,658
Amortization expense estimated for 2018 | 9,593 |  |
Amortization expense estimated for 2019 | 9,387 |  |
Amortization expense estimated for 2020 | 9,387 |  |
Amortization expense estimated for 2021 | 9,234 |  |
Amortization expense estimated for 2022 | 9,208 |  |
Amortization expense estimated thereafter | 90,761 |  |
Home and Building Products (HBP) [Member] |  |  |
Goodwill [Line Items] |  |  |
Reallocation of Goodwill | 148,076 |  |
Consumer And Professional Products Segment [Member] |  |  |
Goodwill [Line Items] |  |  |
Reallocation of Goodwill | $ (148,076) |  |

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