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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2019
Accounting Policies [Abstract] |
Summary of Revenue from Contracts with Customers by Revenue | The following table summarizes revenue from contracts with customers by revenue source for the three and nine months ended September 30, 2019 and 2018.
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Revenue by Revenue Stream |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Marketplace subscription revenue |  | $ | 135,542 |  |  | $ | 105,930 |  |  | $ | 385,481 |  |  | $ | 292,812 |
Advertising and other revenue |  |  | 14,920 |  |  |  | 13,195 |  |  |  | 45,282 |  |  |  | 35,184 |
Total |  | $ | 150,462 |  |  | $ | 119,125 |  |  | $ | 430,763 |  |  | $ | 327,996 |
Summary of Future Minimum Lease Payments | Future minimum lease payments as of September 30, 2019 are as follows:
Year Ending December 31, |  | Operating Lease Commitments |
2019 (excluding the nine months ended September 30, 2019) |  | $ | 1,936 |
2020 |  |  | 11,219 |
2021 |  |  | 11,470 |
2022 |  |  | 11,369 |
2023 |  |  | 8,743 |
Thereafter |  |  | 43,257 |
Total lease payments |  | $ | 87,994 |
Less imputed interest |  |  | (22,365 | )
Total |  | $ | 65,629 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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