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Impairments (Tables) | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Other Intangible Assets | As of September 30, 2025 and December 31, 2024, intangible assets, exclusive of assets that have been retired, consisted of the following:
|  | As of September 30, 2025 |
|  | Weighted Average Remaining Useful Life (years) |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Brand |  |  | 3.7 |  |  | $ | 9,178 |  |  | $ | (5,685 | ) |  | $ | 3,493 |
Customer relationships |  |  | — |  |  |  | 1,870 |  |  |  | (1,870 | ) |  |  | — |
Developed technology |  |  | — |  |  |  | 1,565 |  |  |  | (1,565 | ) |  |  | — |
Total |  |  |  |  | $ | 12,613 |  |  | $ | (9,120 | ) |  | $ | 3,493 |
|  | As of December 31, 2024 |
|  | Weighted Average Remaining Useful Life (years) |  |  | Gross Carrying Amount (1) |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Brand |  |  | 6.1 |  |  | $ | 24,559 |  |  | $ | (12,792 | ) |  | $ | 11,767 |
Customer relationships |  |  | — |  |  |  | 19,870 |  |  |  | (19,870 | ) |  |  | — |
Developed technology |  |  | — |  |  |  | 64,565 |  |  |  | (64,565 | ) |  |  | — |
Total |  |  |  |  | $ | 108,994 |  |  | $ | (97,227 | ) |  | $ | 11,767 |
(1) During the year ended December 31, 2024, the Company recorded $7,538 of impairment charges for the brand intangible asset related to the CarOffer reporting unit in the Digital Wholesale segment and accordingly adjusted the gross carrying amount of the asset.
Summary of Estimated Amortization Expense of Intangible Assets | As of September 30, 2025, estimated amortization expense of intangible assets for future periods is as follows:
Year Ending December 31, |  | Amortization Expense |
Remainder of 2025 |  | $ | 240 |
2026 |  |  | 959 |
2027 |  |  | 959 |
2028 |  |  | 959 |
2029 |  |  | 368 |
Thereafter |  |  | 8 |
Total |  | $ | 3,493 |
Summary of Changes in Carrying Value of Goodwill | As of September 30, 2025, changes in the carrying value of goodwill were as follows:
|  | U.S. Marketplace |  |  | Digital Wholesale |  |  | Other |  |  | Total |
Balance as of December 31, 2024 |  | $ | 12,477 |  |  | $ | 19,568 |  |  | $ | 14,122 |  |  | $ | 46,167 |
Impairment of goodwill |  |  | — |  |  |  | (19,568 | ) |  |  | — |  |  |  | (19,568 | )
Foreign currency translation adjustment |  |  | — |  |  |  | — |  |  |  | 1,810 |  |  |  | 1,810 |
Balance as of September 30, 2025 |  | $ | 12,477 |  |  | $ | — |  |  | $ | 15,932 |  |  | $ | 28,409 |
Summary of Impairments | For the three months ended September 30, 2025 and 2024 and for the nine months ended September 30, 2025 and 2024, impairments consisted of the following:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Cost of Revenue |  |  |  |  |  |  |  |  |  |  |  |
Capitalized website development |  | $ | — |  |  | $ | 9,750 |  |  | $ | 2,919 |  |  | $ | 9,930 |
Total impairments in cost of revenue |  | $ | — |  |  | $ | 9,750 |  |  | $ | 2,919 |  |  | $ | 9,930 |
Operating Expense |  |  |  |  |  |  |  |  |  |  |  |
Capitalized hosting arrangements |  | $ | — |  |  | $ | 974 |  |  | $ | 291 |  |  | $ | 974 |
Capitalized internal-use software |  |  | — |  |  |  | — |  |  |  | 769 |  |  |  | — |
Capitalized website development |  |  | — |  |  |  | 5,833 |  |  |  | 1,882 |  |  |  | 5,833 |
Intangible assets |  |  | — |  |  |  | — |  |  |  | 6,624 |  |  |  | 7,538 |
Goodwill |  |  | — |  |  |  | — |  |  |  | 19,568 |  |  |  | 115,206 |
Right-of-use assets |  |  | — |  |  |  | — |  |  |  | 499 |  |  |  | 4,731 |
Furniture and fixtures |  |  | — |  |  |  | 219 |  |  |  | — |  |  |  | 219 |
Total impairments in operating expense |  | $ | — |  |  | $ | 7,026 |  |  | $ | 29,633 |  |  | $ | 134,501 |
Total |  | $ | — |  |  | $ | 16,776 |  |  | $ | 32,552 |  |  | $ | 144,431 |

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