ASSETS HELD FOR SALE - Assets Held for sale (Details) - Disposal Group, Held-for-sale, Not Discontinued Operations - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Long Lived Assets Held-for-sale [Line Items]
Net property and equipment	$ 528	$ 4,686
Radio broadcasting licenses	0	16,744
Operating lease right-of-use assets	0	1,292
Operating lease liabilities	0	(1,315)
Net assets held for sale	$ 528	$ 21,407

Disposal Group, Including Discontinued Operation, Operating Lease Liabilities

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Disposal Group Including Discontinued Operation, Operating Lease Right-of-use Assets

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Amount classified as assets attributable to disposal group held for sale or disposed of.

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Amount classified as intangible assets, excluding goodwill, attributable to disposal group held for sale or disposed of.

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Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.

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