GOODWILL AND OTHER INTANGIBLE ASSETS - Intangible assets (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
GOODWILL AND OTHER INTANGIBLE ASSETS
Amortizing intangibles	$ 144,577		$ 144,577		$ 144,582
Accumulated amortization	(77,668)		(77,668)		(74,699)
Amortizing intangibles, net	66,909		66,909		69,883
Non-amortizing intangibles	1,366,417		1,366,417		1,357,256
Intangibles, net	1,433,326		1,433,326		$ 1,427,139
Amortization expense	1,700	$ 900	3,000	$ 2,900
Loss on impairment of intangibles	$ 0		$ 0	2,800
Impairment charges on non-amortizing intangibles.		$ 2,800		$ 2,800
Minimum
GOODWILL AND OTHER INTANGIBLE ASSETS
Useful life of intangible assets	10 years		10 years
Maximum
GOODWILL AND OTHER INTANGIBLE ASSETS
Useful life of intangible assets	15 years		15 years

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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