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Segment Information - Schedule of Significant Segment Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Revenues [Abstract] |  |  |  |
Total revenue |  | $ 719,152 | $ 689,183 | $ 653,876
Operating Expenses [Abstract] |  |  |  |
Employee expense | [1] | 237,943 | 227,047 | 204,080
Marketing and advertising |  | 112,134 | 116,766 | 113,020
Direct costs |  | 86,506 | 84,024 | 79,970
Hardware, software and supplies |  | 30,949 | 26,002 | 23,605
Stock-based compensation |  | 30,553 | 28,491 | 22,342
Depreciation and amortization |  | 107,182 | 101,000 | 94,394
Other | [2] | 60,387 | 51,737 | 50,429
Total operating expenses |  | 665,654 | 635,067 | 587,840
Operating income |  | 53,498 | 54,116 | 66,036
Nonoperating income (expense), net |  | 8,365 | (36,011) | (43,460)
Income before income taxes |  | 61,863 | 18,105 | 22,576
Income tax expense (benefit) |  | 13,675 | (100,337) | 5,370
Net income | [3] | 48,188 | 118,442 | 17,206
Dealer |  |  |  |
Revenues [Abstract] |  |  |  |
Total revenue |  | 640,722 | 621,661 | 579,222
OEM and National |  |  |  |
Revenues [Abstract] |  |  |  |
Total revenue |  | 65,894 | 55,904 | 58,557
Other |  |  |  |
Revenues [Abstract] |  |  |  |
Total revenue |  | $ 12,536 | $ 11,618 | $ 16,097
[1] | Employee expense excludes stock-based compensation, which is shown separately, and earnout compensation related to the D2C Media Acquisition, which is included in Other.
[2] | Other primarily includes total lease cost, utilities, consulting and professional fees, earnout compensation related to the D2C Media Acquisition and travel and expense, training and conferences. For more information on the D2C Media earnout, see Note 3 (Business Combinations).
[3] | During the year ended December 31, 2023 the Company released a significant portion of its valuation allowance for deferred tax assets that had been recorded as a result of the 2020 goodwill and indefinite-lived intangible asset impairments. For more information, see Note 14 (Income Taxes).

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