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Segment and Geographic Information - Summary of Segment Revenue, Significant Segment Expenses, Segment Depreciation And Amortization, Segment Income (Loss) From Operations, And The Reconciliation From Segment Income (Loss) From Operations To Consolidated Income Before Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Total Revenue |  | $ 225,158 |  | $ 215,796 |
Cost of revenue | [1] | 25,451 |  | 40,835 |
Sales and marketing |  | 86,716 |  | 82,274 |
Depreciation and amortization |  | 4,206 |  | 2,792 |
Total segment expenses |  | 153,952 |  | 148,677 |
Other operating income |  | 1,753 |  | 2,407 |
Income from operations |  | 45,755 |  | 26,284 |
Other income, net |  | 2,796 |  | 3,401 |
Income before income taxes |  | 48,551 |  | 29,685 |
Operating Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Revenue |  | 208,151 |  | 201,565 |
Cost of revenue |  | 24,083 | [2] | 39,887 | [3]
Sales and marketing |  | 75,559 |  | 72,893 |
Depreciation and amortization |  | 4,132 |  | 2,715 |
Other segment items |  | 60,375 |  | 62,193 |
Total segment expenses |  | 164,149 |  | 177,688 |
Total segment income (loss) from operations |  | 44,002 |  | 23,877 |
Other Revenue |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Revenue |  | 17,007 |  | 14,231 |
U.S. Marketplace | Operating Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Revenue |  | 195,228 |  | 172,988 |
Cost of revenue |  | 12,880 | [2] | 13,437 | [3]
Sales and marketing |  | 72,230 |  | 67,008 |
Depreciation and amortization |  | 3,649 |  | 1,628 |
Other segment items |  | 56,688 |  | 56,698 |
Total segment expenses |  | 145,447 |  | 138,771 |
Total segment income (loss) from operations |  | 49,781 |  | 34,217 |
Digital Wholesale | Operating Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Revenue |  | 12,923 |  | 28,577 |
Cost of revenue |  | 11,203 | [2] | 26,450 | [3]
Sales and marketing |  | 3,329 |  | 5,885 |
Depreciation and amortization |  | 483 |  | 1,087 |
Other segment items |  | 3,687 |  | 5,495 |
Total segment expenses |  | 18,702 |  | 38,917 |
Total segment income (loss) from operations |  | $ (5,779) |  | $ (10,340) |
[1] | Includes depreciation and amortization expense for the three months ended March 31, 2025 and 2024 of $2,348 and $4,689, respectively.
[2] | For the three months ended March 31, 2025, U.S. Marketplace and Digital Wholesale cost of revenue includes depreciation and amortization expense of $1,686 and $425, respectively.
[3] | For the three months ended March 31, 2024, U.S. Marketplace and Digital Wholesale cost of revenue includes depreciation and amortization expense of $1,369 and $3,194, respectively.

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