DISCONTINUED OPERATIONS - Components of Earnings (Loss) (Details) - Discontinued Operations, Disposed of by Sale - IAC/InterActiveCorp - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 726,361	$ 0	$ 1,410,485
Operating costs and expenses	0	(840,902)	0	(1,840,178)
Operating loss	0	(114,541)	0	(429,693)
Interest expense	0	(1,555)	0	(3,772)
Other income (expense)	0	51,244	0	(2,503)
Income tax benefit	509	30,241	509	69,390
Earnings (loss) from discontinued operations	$ 509	$ (34,611)	$ 509	$ (366,578)