Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Summary of Reportable Operating Segment (Detail)

v3.8.0.1
Segment Information - Summary of Reportable Operating Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Segment Reporting Information [Line Items]        
Total consolidated revenues $ 2,505,701 $ 2,557,928 $ 7,199,269 $ 7,174,866
Total segment income (loss) 46,880 44,255 107,968 130,480
Interest expense, other, net (13,028) (13,016) (39,200) (37,560)
Other income (expense), net 4 11 (14,490) 120
Income (loss) from continuing operations before taxes 33,856 31,250 54,278 93,040
Franchised Dealerships [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenues 2,448,574 2,514,240 7,051,291 7,077,666
Total segment income (loss) 51,384 48,265 125,397 141,119
Pre-Owned Stores [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenues 57,127 43,688 147,978 97,200
Total segment income (loss) $ (4,504) $ (4,010) $ (17,429) $ (10,639)