DISCONTINUED OPERATIONS - Components of Earnings (Loss) (Details) - Discontinued Operations, Disposed of by Sale - IAC/InterActiveCorp - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 0	$ 1,410,485
Operating costs and expenses	0	0	(1,840,178)
Operating loss	0	0	(429,693)
Interest expense	0	0	(3,772)
Other expense	0	0	(2,503)
Income tax benefit	508	509	69,898
Earnings (loss) from discontinued operations	$ 508	$ 509	$ (366,070)