Quarterly report pursuant to Section 13 or 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
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income (loss) from operations $ (1,038) $ 225 $ (1,317) $ (2,200)
Gain (loss) on disposal (1,117) (356) (1,115) 46,394
Lease exit accrual adjustments and charges 0 0 0 170
Pre-tax income (loss) (2,155) (131) (2,432) 44,364
Total revenues $ 0 $ 100,597 $ 6,615 $ 216,110