Quarterly report [Sections 13 or 15(d)]

Segment Information - Summary of Reportable Operating Segment (Details)

v3.25.3
Segment Information - Summary of Reportable Operating Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Revenues:            
Total consolidated revenues $ 3,973,800 $ 3,491,500 $ 11,282,300 $ 10,328,500    
Segment income (loss):            
Segment income (loss) 122,700 113,600 244,300 328,000    
Interest expense, other, net (27,500) (29,800) (82,500) (88,100)    
Other income (expense), net (100) 0 0 (500)    
Income (loss) from continuing operations before taxes 71,200 60,800 99,600 174,000    
Powersports Fixed Ops Cost of Sales (12,700) (10,900) (21,900) (19,600)    
Powersports Wholesale Vehicles Cost of Sales (1,100) (1,200) (2,200) (2,500)    
Powersports Used Vehicles Cost of Sales (14,300) (6,800) (25,600) (13,300)    
Powersports New Vehicles Cost of Sales (32,700) (22,800) (72,400) (55,100)    
EchoPark Wholesale Vehicles Cost of Sales (30,900) (23,800) (84,500) (75,100)    
EchoPark Used Vehicles Cost of Sales (437,200) (465,900) (1,326,000) (1,387,600)    
Franchised Fixed Ops Cost of Sales (248,800) (228,200) (715,100) (662,800)    
Franchised Wholesale Vehicles Cost of Sales (55,700) (43,500) (169,800) (140,900)    
Franchised Used Vehicles Cost of Sales (756,300) (666,800) (2,167,500) (2,048,700)    
Franchised Fleet New Vehicles Cost of Sales (26,000) (21,600) (76,300) (65,700)    
Franchised New Vehicles Cost of Sales (1,742,700) (1,456,400) (4,836,800) (4,238,300)    
Impairment charges 0 0 173,800 2,400    
Excluded non-recurring compensation-related charges   1,800        
FloorPlanDepositBalance 175,000   175,000   $ 340,000  
Excluded storm-related physical damage and legal costs   1,500 5,000 5,100    
Impairment of Long-Lived Assets to be Disposed of       2,400    
FloorPlanInterestExpense 23,900 23,000 62,200 65,400    
Interest Expense, Other 27,500 29,800 82,500 88,100    
Payments to Acquire Property, Plant, and Equipment 33,500 53,300 112,600 145,900    
Cash and cash equivalents 89,400 17,600 89,400 17,600 44,000 $ 28,900
Assets 6,016,400   6,016,400   5,895,700  
Gain on Franchise Disposal 100   5,500      
Powersports Used Vehicle Revenue 17,200 9,000 31,200 17,600    
Powersports Wholesale Vehicle Revenue 1,000 1,100 2,100 2,300    
Powersports Fixed Ops Revenue 23,800 20,100 41,400 36,600    
Powersports F&I Revenue 3,300 2,300 6,700 5,800    
Excluded non-recurring compensation-related charges   1,800        
Franchised Dealerships Segment            
Segment income (loss):            
Segment gross profit 537,700 470,700 1,559,400 1,423,800    
Payments to Acquire Property, Plant, and Equipment 32,300 50,300 109,300 141,400    
Assets 5,005,000   5,005,000   4,704,500  
EchoPark Segment            
Segment income (loss):            
Segment income (loss) 2,600 5,200 24,600 6,100    
Interest expense, other, net 400 700 1,100 2,000    
Other income (expense), net 0 0 0 0    
Segment gross profit 54,400 55,200 180,400 158,900    
Other Expenses (10,300) (8,600) (29,800) (32,800)    
Rent expense, SG&A (800) (700) (2,300) 2,700    
Advertising Expense (7,400) (7,400) (22,400) (21,000)    
Compensation Expense, Excluding Cost of Good and Service Sold (25,000) (23,500) (76,100) (72,000)    
Closed Store Accrued Expenses       2,100    
Excluded non-recurring compensation-related charges       2,900    
Depreciation, Depletion and Amortization (5,100) (5,400) (15,500) (16,400)    
FloorPlanInterestExpense (2,800) (3,700) (8,600) (11,300)    
Interest Expense, Other (400) (700) (1,100) (2,000)    
Payments to Acquire Property, Plant, and Equipment 600 200 1,100 800    
Assets 520,500   520,500   574,500  
Gain on Franchise Disposal     (900)      
Excluded non-recurring compensation-related charges       2,900    
FranchisedDealershipsMember            
Segment income (loss):            
Segment income (loss) 60,800 51,600 244,400 168,000    
Interest expense, other, net 26,400 28,500 79,300 84,100    
Other income (expense), net (100) 100 0 (600)    
Other Expenses (114,700) (97,400) (290,500) (295,700)    
Rent expense, SG&A (12,700) (9,200) (31,800) (29,600)    
Advertising Expense (18,800) (13,700) (51,400) (43,200)    
Compensation Expense, Excluding Cost of Good and Service Sold (248,900) (220,200) (707,500) (658,500)    
Impairment charges     (165,900) (1,000)    
Excluded non-recurring compensation-related charges       2,200    
Depreciation, Depletion and Amortization (34,600) (31,500) (102,200) (91,600)    
FloorPlanInterestExpense (20,700) (18,700) (52,300) (52,500)    
Interest Expense, Other (26,400) (28,500) (79,300) (84,100)    
Gain on Franchise Disposal 200          
Excluded non-recurring compensation-related charges       2,200    
Powersports Segment            
Segment income (loss):            
Segment income (loss) 7,800 4,000 4,300 2,300    
Interest expense, other, net 700 600 2,100 1,900    
Other income (expense), net (100) 0 100 0    
Segment gross profit 23,300 17,700 44,400 36,200    
Loss on disposal of business     1,100      
Other Expenses (3,200) (3,600) (9,600) (7,300)    
Rent expense, SG&A 200 1,100 700 1,000    
Advertising Expense (300) (400) (800) (1,200)    
Compensation Expense, Excluding Cost of Good and Service Sold (9,700) (8,400) (23,100) (19,800)    
Impairment charges     (7,200)      
Depreciation, Depletion and Amortization (1,300) (1,100) (3,900) (3,100)    
FloorPlanInterestExpense (400) (700) (1,400) (1,600)    
Interest Expense, Other (700) (600) (2,100) (1,900)    
Payments to Acquire Property, Plant, and Equipment 600 2,800 2,200 3,700    
Assets 226,500   226,500   $ 232,700  
Operating segments            
Segment income (loss):            
Segment income (loss) 71,200 60,800 273,300 176,400    
Operating segments | Franchised Dealerships Segment            
Segment income (loss):            
Segment income (loss) 60,800 51,600 244,400 168,000    
Operating segments | EchoPark Segment            
Segment income (loss):            
Segment income (loss) 2,600 5,200 24,600 6,100    
Operating segments | Powersports Segment            
Segment income (loss):            
Segment income (loss) 7,800 4,000 4,300 2,300    
Reconciling items            
Segment income (loss):            
Interest expense, other, net     (173,800) (2,400)    
Other income (expense), net 71,200 60,800 99,600 174,000    
Impairment charges 0 0        
Interest Expense, Other     173,800 2,400    
New vehicles            
Revenues:            
Total consolidated revenues 1,898,800 1,589,000 5,272,600 4,643,200    
Used vehicles            
Revenues:            
Total consolidated revenues 1,253,100 1,180,700 3,658,800 3,582,500    
Used vehicles | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 796,700 701,400 2,287,300 2,162,800    
Used vehicles | EchoPark Segment            
Revenues:            
Total consolidated revenues 439,200 470,300 1,340,300 1,402,000    
Wholesale vehicles            
Revenues:            
Total consolidated revenues 84,200 67,200 250,500 215,800    
Wholesale vehicles | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 52,800 42,400 165,100 139,100    
Wholesale vehicles | EchoPark Segment            
Revenues:            
Total consolidated revenues 30,400 23,800 83,200 74,400    
Parts, service and collision repair            
Revenues:            
Total consolidated revenues 533,900 479,000 1,503,800 1,369,800    
Parts, service and collision repair | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 510,100 458,900 1,462,500 1,333,200    
Finance, insurance and other, net            
Revenues:            
Total consolidated revenues 203,800 175,600 596,600 517,200    
Finance, insurance and other, net | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 147,600 122,400 422,500 366,300    
Finance, insurance and other, net | EchoPark Segment            
Revenues:            
Total consolidated revenues 52,900 50,800 167,400 145,200    
Retail New Vehicles [Member]            
Revenues:            
Total consolidated revenues 1,872,800 1,566,800 5,195,200 4,575,200    
Retail New Vehicles [Member] | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 1,834,000 1,539,900 5,110,100 4,510,800    
Fleet New Vehicles [Member]            
Revenues:            
Total consolidated revenues 26,000 22,200 77,400 68,000    
Fleet New Vehicles [Member] | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 26,000 22,200 77,400 68,000    
Retail New Vehcile            
Revenues:            
Powersports New Vehicle Revenue $ 38,800 $ 26,900 85,100 64,400    
CDK Outage Impact [Member]            
Segment income (loss):            
Excluded non-recurring compensation-related charges       13,000    
Excluded non-recurring compensation-related charges       $ 13,000    
Insurance Settlement [Member]            
Segment income (loss):            
Other Nonrecurring Gain     $ (40,000)