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GOODWILL AND OTHER INTANGIBLE ASSETS - Intangible assets gross carrying amounts and accumulated amortization (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Sep. 30, 2023
--- | --- | ---
GOODWILL AND OTHER INTANGIBLE ASSETS |  |
Goodwill | $ 535,661 | $ 503,177
Less: accumulated amortization | 221,321 | 204,881
Trade names |  |
GOODWILL AND OTHER INTANGIBLE ASSETS |  |
Trade names | 162,796 | 161,447
Customer Relationships |  |
GOODWILL AND OTHER INTANGIBLE ASSETS |  |
Gross carrying amount | 327,695 | 296,927
Less: accumulated amortization | 122,542 | 113,311
Net | 205,153 | 183,616
Capitalized software |  |
GOODWILL AND OTHER INTANGIBLE ASSETS |  |
Gross carrying amount | 128,042 | 121,883
Less: accumulated amortization | 86,622 | 80,774
Net | 41,420 | 41,109
Patents |  |
GOODWILL AND OTHER INTANGIBLE ASSETS |  |
Gross carrying amount | 2,516 | 2,516
Less: accumulated amortization | 1,287 | 1,218
Net | 1,229 | 1,298
Other |  |
GOODWILL AND OTHER INTANGIBLE ASSETS |  |
Gross carrying amount | 15,144 | 14,232
Less: accumulated amortization | 10,870 | 9,578
Net | $ 4,274 | $ 4,654

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