Quarterly report pursuant to Section 13 or 15(d)

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

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Business Acquisitions and Dispositions - Revenues and Other Activities Associated with Disposed Dealerships That Remain in Continued Operations (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Business Combinations [Abstract]    
Income (loss) from operations $ (31) $ (945)
Gain (loss) on disposal (48) (102)
Pre-tax income (loss) (79) (1,047)
Total revenues $ 14 $ 28,619