DISCONTINUED OPERATIONS - Components of Loss (Details) - Discontinued Operations, Disposed of by Sale - IAC/InterActiveCorp - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 705,381	$ 1,410,485	$ 2,035,284
Operating costs and expenses	0	(694,765)	(1,840,178)	(2,079,354)
Operating income (loss)	0	10,616	(429,693)	(44,070)
Interest expense	0	(3,139)	(3,772)	(10,491)
Other (expense) income	0	(1,559)	(2,503)	44,014
Income tax benefit	508	16,063	69,898	55,396
Earnings (loss) from discontinued operations	$ 508	$ 21,981	$ (366,070)	$ 44,849