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Segment and Geographic Information (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) segment | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Segment Reporting [Abstract] |  |  |
Number of operating segments | segment | 1 |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Number of operating segments | segment | 1 |  |
Total revenue | $ 254,316 | $ 188,001 | $ 124,875
Property and equipment, net | 8,076 | 8,270 |
United States |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total revenue | 119,775 | 85,642 | 57,231
Property and equipment, net | 6,025 | 6,409 |
United Kingdom |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total revenue | 25,669 | 19,625 | 13,158
Other |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total revenue | 108,872 | 82,734 | $ 54,486
Property and equipment, net | 777 | 47 |
Russia |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Property and equipment, net | 0 | 1,406 |
Spain |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Property and equipment, net | 832 | 0 |
Czech Republic |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Property and equipment, net | $ 442 | $ 408 |

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599 + Details
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