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Business Acquisitions and Dispositions - Revenues and Other Activities Associated with Disposed Dealerships That Remain in Continuing Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  |  |  | $ 32,500
Disposed dealerships that remain in continuing operations |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income (loss) from operations | $ (2,200) | $ (6,400) | $ (11,500) | (35,000)
Gain (loss) on disposal | 100 | (300) | (1,300) | 20,400
Lease exit accrual adjustments and charges | (1,200) | 1,400 | (7,400) | 5,700
Pre-tax income (loss) | (900) | (8,100) | (5,400) | (66,300)
Total revenues | 400 | 72,800 | 23,600 | 449,400
Impairment of Long-Lived Assets to be Disposed of | $ 0 | $ 0 | $ 0 | $ (46,000)

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