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Segment Reporting and Significant Customer Information - Revenue by Type and Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues | $ 26,898 | $ 25,505 | $ 28,184 | $ 30,825 | $ 27,062 | $ 25,301 | $ 28,075 | $ 30,884 | $ 111,412 | $ 111,322
Travel |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 96,218 | 94,352
Local |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 15,194 | 16,970
Asia Pacific |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 6,490 | 7,859
Asia Pacific | Travel |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 6,274 | 7,351
Asia Pacific | Local |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 216 | 508
Europe |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 36,898 | 36,149
Europe | Travel |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 32,081 | 30,856
Europe | Local |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 4,817 | 5,293
North America |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 68,024 | 67,314
North America | Travel |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 57,863 | 56,145
North America | Local |  |  |  |  |  |  |  |  |  |
Breakdown of revenues by type and segment |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 10,161 | $ 11,169

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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 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: 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=118956577&loc=SL49130545-203045 + Details
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