Quarterly report pursuant to Section 13 or 15(d)

Business Acquisitions and Dispositions - Revenues and Other Activities Associated with Disposed Dealerships Classified as Discontinued Operations (Detail)

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Business Acquisitions and Dispositions - Revenues and Other Activities Associated with Disposed Dealerships Classified as Discontinued Operations (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Business Combinations [Abstract]        
Income (loss) from operations $ (119) $ (212) $ (561) $ (539)
Lease exit accrual adjustments and charges (362) (1,201) (1,089) (974)
Pre-tax income (loss) $ (481) $ (1,413) $ (1,650) $ (1,513)