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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Percentage of dealership that is accounted for under the equity method | 50.00% |  | 50.00% |  |
Effective tax rate from continuing operations | 51.00% |  | 17.80% |  |
Income benefit | $ 13,400 | $ (22,800) | $ (16,600) | $ (47,800) |
Impairment charges | $ 0 | $ 0 | $ (2,400) | $ 62,600 |
Dealership |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Percentage of dealership that is accounted for under the equity method | 50.00% |  | 50.00% |  |
ASU 2014-09 | Finance, insurance and other, net |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Contract assets | $ 2,200 |  | $ 2,200 |  | $ 31,800

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