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SEGMENT INFORMATION - Schedule of Revenue by Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | $ 1,416,868 | $ 2,218,915 | $ 2,636,746
North America |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 818,624 | 1,358,907 | 1,639,395
International |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 598,244 | 860,008 | 997,351
United States |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 808,300 | 1,333,900 | 1,600,200
United Kingdom |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 216,300 | 314,300 | 390,400
Service |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 643,653 | 1,126,357 | 1,205,487
Service | North America |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 485,145 | 795,213 | 843,002
Service | International |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 158,508 | 331,144 | 362,485
Service | Local | North America |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 432,183 | 721,038 | 752,863
Service | Local | International |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 138,274 | 287,611 | 306,700
Service | Goods | North America |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 35,276 | 16,236 | 18,283
Service | Goods | International |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 11,757 | 9,441 | 14,602
Service | Travel | North America |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 17,686 | 57,939 | 71,856
Service | Travel | International |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 8,477 | 34,092 | 41,183
Product |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 773,215 | 1,092,558 | 1,431,259
Product | Goods | North America |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | 333,479 | 563,694 | 796,393
Product | Goods | International |  |  |
Schedule of Revenue by Segment [Line Items] |  |  |
Total revenue | $ 439,736 | $ 528,864 | $ 634,866

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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