Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Summary of Reportable Operating Segment (Details)

v3.10.0.1
Segment Information - Summary of Reportable Operating Segment (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenues:        
Total consolidated revenues $ 2,470,849,000 $ 2,505,701,000 $ 7,377,372,000 $ 7,199,269,000
Segment income (loss):        
Segment income (loss) 48,137,000 55,762,000 118,972,000 134,381,000
Interest expense, other, net (13,313,000) (13,028,000) (40,144,000) (39,200,000)
Other income (expense), net 0 4,000 107,000 (14,490,000)
Income (loss) from continuing operations before taxes 22,632,000 33,856,000 44,120,000 54,278,000
Asset impairment charges 0 200,000 13,961,000 3,315,000
Net loss on extinguishment of debt     0 (14,607,000)
Franchised Dealerships Segment        
Revenues:        
Total consolidated revenues 2,284,931,000 2,448,574,000 6,879,783,000 7,051,291,000
EchoPark Segment        
Revenues:        
Total consolidated revenues 185,918,000 57,127,000 497,589,000 147,978,000
Operating segments        
Segment income (loss):        
Segment income (loss) 35,945,000 46,880,000 84,157,000 107,968,000
Operating segments | Franchised Dealerships Segment        
Segment income (loss):        
Segment income (loss) 40,971,000 51,486,000 130,856,000 125,553,000
Operating segments | Franchised Dealerships Segment | Income (loss) from continuing operations before taxes        
Segment income (loss):        
Gain on disposal 300,000 8,500,000 38,900,000 8,500,000
Executive transition costs 1,600,000   1,600,000  
Excluded storm-related physical damage and legal costs 1,200,000 3,500,000 5,800,000 10,300,000
Asset impairment charges   200,000 14,000,000.0 3,300,000
Lease exit charges     2,200,000 300,000
Net loss on extinguishment of debt       (14,600,000)
Operating segments | EchoPark Segment        
Segment income (loss):        
Segment income (loss) (5,026,000) (4,606,000) (46,699,000) (17,585,000)
Operating segments | EchoPark Segment | Income (loss) from continuing operations before taxes        
Segment income (loss):        
Lease exit charges       600,000
Double-carry interest       700,000
Excluded non-recurring compensation-related charges   500,000 32,500,000 500,000
Reconciling items        
Segment income (loss):        
Interest expense, other, net (13,313,000) (13,028,000) (40,144,000) (39,200,000)
Other income (expense), net $ 0 $ 4,000 $ 107,000 $ (14,490,000)