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)

v3.10.0.1
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 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income (loss) from operations $ (910) $ (1,779) $ (6,039) $ (4,067)
Gain (loss) on disposal (88) 8,490 39,149 8,466
Lease exit accrual adjustments and charges (15) 0 (33) 0
Pre-tax income (loss) (1,013) 6,711 33,077 4,399
Total revenues $ 0 $ 127,313 $ 108,754 $ 393,662