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Business Acquisitions and Dispositions - Revenues and Other Activities Associated with Disposed Dealerships Classified as Discontinued Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax, Total $ 0 $ (1,000) $ (600)