GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite-lived intangibles
Finite-lived intangibles, Cost	$ 169,540	$ 173,559
Accumulated Amortization	(82,115)	(68,249)
Finite-lived intangible assets, net	87,425	105,310
Indefinite-lived intangibles
Total intangibles, Cost	178,140	182,159
Total intangibles, Net	96,025	113,910
Trademarks
Indefinite-lived intangibles
Indefinite-lived intangibles	8,600	8,600
Customer relationships
Finite-lived intangibles
Finite-lived intangibles, Cost	169,540	171,684
Accumulated Amortization	(82,115)	(67,312)
Finite-lived intangible assets, net	87,425	104,372
Trademarks
Finite-lived intangibles
Finite-lived intangibles, Cost	0	1,875
Accumulated Amortization	0	(937)
Finite-lived intangible assets, net	$ 0	$ 938

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

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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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Amount before accumulated amortization of intangible assets, excluding goodwill.

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