Annual report pursuant to Section 13 and 15(d)

Segment Information - Summary of Reportable Operating Segment (Detail)

v3.6.0.2
Segment Information - Summary of Reportable Operating Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]                        
Total consolidated revenues $ 2,556,913 $ 2,557,928 $ 2,382,312 $ 2,234,626 $ 2,470,635 $ 2,494,408 $ 2,423,740 $ 2,235,516 $ 9,731,779 $ 9,624,299 $ 9,197,099  
Total segment income (loss)                 205,193 195,967 214,820  
Interest expense, other, net                 (50,106) (50,910) (53,190)  
Other income (expense), net                 125 99 97  
Income (loss) from continuing operations before taxes                 155,212 145,156 161,727  
Total floor plan interest expense                 27,716 21,326 18,793  
Total depreciation and amortization                 77,446 68,799 58,260  
Total capital expenditures                 206,232 173,249 146,432  
Total assets 3,639,336       3,562,381       3,639,336 3,562,381    
Cash and cash equivalents 3,108       3,625       3,108 3,625 4,182 $ 3,016
Goodwill, Net 472,437       471,493       472,437 471,493 475,929  
Other Intangible Assets, net 80,233       80,876       80,233 80,876    
Other Corporate and other assets 859,656       718,347       859,656 718,347    
Franchised Dealerships [Member]                        
Segment Reporting Information [Line Items]                        
Total consolidated revenues                 9,602,562 9,547,236 9,191,661  
Total segment income (loss)                 217,306 213,224 230,733  
Total floor plan interest expense                 26,777 20,727 18,727  
Total depreciation and amortization                 73,635 65,766 58,001  
Total capital expenditures                 170,876 148,593 117,129  
Total assets 2,095,777       2,211,232       2,095,777 2,211,232    
Echo Park [Member]                        
Segment Reporting Information [Line Items]                        
Total consolidated revenues                 129,217 77,063 5,438  
Total segment income (loss)                 (12,113) (17,257) (15,913)  
Total floor plan interest expense                 939 599 66  
Total depreciation and amortization                 3,811 3,033 259  
Total capital expenditures                 35,356 24,656 $ 29,303  
Total assets $ 128,125       $ 76,808       $ 128,125 $ 76,808