SEGMENT INFORMATION Schedule of Revenue by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule of Revenue by Segment [Line Items]
Total revenue	$ 592,883	$ 634,466	$ 1,836,819	$ 1,970,711
North America
Schedule of Revenue by Segment [Line Items]
Total revenue	361,151	414,214	1,134,671	1,339,483
International
Schedule of Revenue by Segment [Line Items]
Total revenue	231,732	220,252	702,148	631,228
Local
Schedule of Revenue by Segment [Line Items]
Total revenue	256,005		775,289
Local | North America
Schedule of Revenue by Segment [Line Items]
Total revenue	180,059	194,090	553,340	602,169
Local | International
Schedule of Revenue by Segment [Line Items]
Total revenue	75,946	71,574	221,949	201,257
Goods
Schedule of Revenue by Segment [Line Items]
Total revenue	6,605		23,656
Goods | North America
Schedule of Revenue by Segment [Line Items]
Total revenue	4,021	4,323	12,691	10,139
Goods | International
Schedule of Revenue by Segment [Line Items]
Total revenue	2,584	4,370	10,965	13,638
Travel
Schedule of Revenue by Segment [Line Items]
Total revenue	26,604		87,718
Travel | North America
Schedule of Revenue by Segment [Line Items]
Total revenue	17,217	18,300	57,189	61,082
Travel | International
Schedule of Revenue by Segment [Line Items]
Total revenue	9,387	9,801	30,529	31,599
UNITED STATES
Schedule of Revenue by Segment [Line Items]
Revenues	1,108,800	1,317,900	352,300	410,500
UNITED KINGDOM
Schedule of Revenue by Segment [Line Items]
Revenues	268,500	222,100	94,000	82,200
Product
Schedule of Revenue by Segment [Line Items]
Total revenue	303,669	332,008	950,156	1,050,827
Product | Goods
Schedule of Revenue by Segment [Line Items]
Total revenue	303,669		950,156
Product | Goods | North America
Schedule of Revenue by Segment [Line Items]
Total revenue	159,854	197,501	511,451	666,093
Product | Goods | International
Schedule of Revenue by Segment [Line Items]
Total revenue	$ 143,815	$ 134,507	$ 438,705	$ 384,734