GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
GOODWILL AND OTHER INTANGIBLE ASSETS
Goodwill	$ 508,406	$ 504,853
Less: accumulated amortization	162,869	149,892
Patents
GOODWILL AND OTHER INTANGIBLE ASSETS
Gross carrying amount	2,208	2,131
Less: accumulated amortization	1,029	972
Net	1,178	1,159
Capitalized software
GOODWILL AND OTHER INTANGIBLE ASSETS
Gross carrying amount	98,398	93,671
Less: accumulated amortization	67,013	63,740
Net	31,385	29,931
Customer relationships
GOODWILL AND OTHER INTANGIBLE ASSETS
Gross carrying amount	292,887	288,530
Less: accumulated amortization	88,933	80,882
Net	203,954	207,648
Other
GOODWILL AND OTHER INTANGIBLE ASSETS
Gross carrying amount	14,567	13,080
Less: accumulated amortization	5,897	4,301
Net	8,670	8,779
Trade names
GOODWILL AND OTHER INTANGIBLE ASSETS
Trade names	$ 162,016	$ 161,733

For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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Gross carrying amount before accumulated amortization as of the balance sheet date to an asset acquired in a business combination representing a favorable existing relationship with customers having a finite beneficial life.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Gross carrying amount before accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

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Amount before accumulated amortization of finite-lived intangible assets classified as other.

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