ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS - Financial Results (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on asset disposal	$ 0		$ (759)	$ 1,752	$ (130)
(Loss) income from discontinued operations, net of tax	(1,078)		736	(696)	3,207
Support Com \| Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	378		7,474	4,223	24,387
Cost of revenue - services and other (exclusive of depreciation and amortization)	(957)		(3,660)	(4,425)	(11,304)
Depreciation and amortization	0		(324)	0	(979)
Selling, general and administrative	(1,353)		(2,451)	(3,265)	(7,831)
Merger and other costs	(154)		(242)	(684)	(940)
Gain on asset disposal	0		0	4,162	0
Loss on assets classified as held for sale	1,135	$ 0	0	(600)	0
Other (loss) income, net	(127)		18	(107)	36
Pretax income from discontinued operations	(1,078)		815	(696)	3,369
Provision for income taxes	0		79	0	162
(Loss) income from discontinued operations, net of tax	$ (1,078)		$ 736	$ (696)	$ 3,207

Disposal Group, Including Discontinued Operation, Merger And Other Costs

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Gain (Loss) Due To Classification Of Held-For-Sale

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Amount before tax of income (loss) from operations classified as a discontinued operation attributable to the parent. Excludes gain (loss) on disposal and provision for gain (loss) until its disposal.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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