Annual report pursuant to Section 13 and 15(d)

Business Acquisitions and Dispositions - Revenues and Other Activities Associated with Disposed Dealerships That Remain in Continuing Operations (Details)

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Business Acquisitions and Dispositions - Revenues and Other Activities Associated with Disposed Dealerships That Remain in Continuing Operations (Details) - Disposed dealerships that remain in continuing operations - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Income (loss) from operations before taxes and items below $ (2,580) $ 2,717 $ (5,158)
Gain (loss) on disposal of dealerships (1) 3,095 74,812 39,307
Lease exit accrual adjustments and charges 0 170 (408)
Impairment charges 0 0 (8,137)
Income (loss) before taxes 515 77,699 25,604
Total revenues $ 52,138 $ 419,469 $ 884,581