SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Revenue	$ 819,179	$ 772,512
Operating income (loss)	21,417	35,119
Adjusted EBITDA	85,886	75,157
Operating segments | Match Group
Segment Reporting Information [Line Items]
Revenue	285,283	235,069
Operating income (loss)	29,188	27,040
Adjusted EBITDA	64,586	33,250
Operating segments | HomeAdvisor
Segment Reporting Information [Line Items]
Revenue	111,489	75,844
Operating income (loss)	1,914	(3,997)
Adjusted EBITDA	4,966	(836)
Operating segments | Publishing
Segment Reporting Information [Line Items]
Revenue	166,002	179,025
Operating income (loss)	6,776	19,376
Adjusted EBITDA	11,414	26,653
Operating segments | Applications
Segment Reporting Information [Line Items]
Revenue	159,796	197,467
Operating income (loss)	27,678	38,906
Adjusted EBITDA	31,058	45,549
Operating segments | Video
Segment Reporting Information [Line Items]
Revenue	55,095	46,472
Operating income (loss)	(17,485)	(20,469)
Adjusted EBITDA	(16,901)	(19,706)
Operating segments | Other
Segment Reporting Information [Line Items]
Revenue	41,632	38,853
Operating income (loss)	(102)	(541)
Adjusted EBITDA	1,059	722
Inter-segment eliminations
Segment Reporting Information [Line Items]
Revenue	(118)	(218)
Corporate
Segment Reporting Information [Line Items]
Operating income (loss)	(26,552)	(25,196)
Adjusted EBITDA	$ (10,296)	$ (10,475)