v3.26.1
Segment Information - Summary of Reportable Operating Segment (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Revenues:            
Total consolidated revenues $ 3,934,000 $ 3,657,200 $ 7,622,500 $ 7,308,500    
Segment income (loss):            
Segment income (loss) 131,600 (23,300) 264,300 121,600    
Interest expense, other, net (30,400) (27,400) (58,700) (55,000)    
Other income (expense), net 0 (100) 0 0    
Income (loss) from continuing operations before taxes 80,300 (69,100) 165,400 28,300    
Powersports Fixed Ops Cost of Sales (7,100) (5,600) (11,000) (9,200)    
Powersports Wholesale Vehicles Cost of Sales (1,100) (300) (1,400) (1,100)    
Powersports Used Vehicles Cost of Sales (13,200) (6,700) (20,800) (11,300)    
Powersports New Vehicles Cost of Sales (32,400) (23,000) (51,400) (39,700)    
EchoPark Wholesale Vehicles Cost of Sales (26,000) (26,000) (53,000) (53,600)    
EchoPark Used Vehicles Cost of Sales (492,600) (420,500) (978,100) (888,800)    
Franchised Fixed Ops Cost of Sales (251,700) (236,000) (499,900) (466,300)    
Franchised Wholesale Vehicles Cost of Sales (46,600) (58,700) (92,500) (114,100)    
Franchised Used Vehicles Cost of Sales (777,300) (705,400) (1,505,400) (1,411,200)    
Franchised Fleet New Vehicles Cost of Sales (24,400) (28,900) (44,500) (50,400)    
Franchised New Vehicles Cost of Sales (1,645,500) (1,543,900) (3,149,500) (3,094,100)    
Impairment charges 0 172,400 400 173,800    
Gain on disposal     5,100      
FloorPlanDepositBalance 275,000   275,000   $ 300,000  
Excluded storm-related physical damage and legal costs 1,200 4,100   5,000    
Impairment of Long-Lived Assets to be Disposed of       200    
FloorPlanInterestExpense 20,900 18,300 40,200 38,300    
Interest Expense, Other 30,400 27,400 58,700 55,000    
Payments to Acquire Property, Plant, and Equipment 117,600 34,100 154,500 79,100    
Cash and cash equivalents 19,200 110,400 19,200 110,400 6,300 $ 44,000
Assets 6,382,200   6,382,200   5,970,700  
Gain on Franchise Disposal   2,400 (5,100) 2,700    
Powersports Used Vehicle Revenue 16,400 8,300 25,600 14,000    
Powersports Wholesale Vehicle Revenue 1,000 300 1,200 1,100    
Powersports Fixed Ops Revenue 14,700 10,600 22,100 17,600    
Powersports F&I Revenue 3,500 2,000 5,300 3,400    
Franchised Dealerships Segment            
Segment income (loss):            
Segment gross profit 532,100 527,600 1,052,900 1,021,600    
Payments to Acquire Property, Plant, and Equipment 110,300 32,500 141,600 77,000    
Assets 5,154,400   5,154,400   4,933,900  
EchoPark Segment            
Segment income (loss):            
Segment income (loss) 7,200 11,700 23,400 22,000    
Interest expense, other, net 300 400 600 800    
Other income (expense), net 0 0 0 100    
Segment gross profit 64,300 62,100 132,300 126,000    
Other Expenses (10,700) (9,000) (21,000) (19,400)    
Rent expense, SG&A (1,100) (700) 1,700 (1,400)    
Advertising Expense (8,200) (7,300) (16,500) (15,100)    
Compensation Expense, Excluding Cost of Good and Service Sold (27,300) (25,200) (54,200) (51,100)    
Depreciation, Depletion and Amortization (6,300) (5,200) (12,100) (10,500)    
FloorPlanInterestExpense (3,200) (2,600) (6,200) (5,800)    
Interest Expense, Other (300) (400) (600) (800)    
Payments to Acquire Property, Plant, and Equipment 6,000 300 11,200 500    
Assets 589,100   589,100   506,100  
FranchisedDealershipsMember            
Segment income (loss):            
Segment income (loss) 70,700 91,600 142,100 183,600    
Interest expense, other, net 29,200 26,300 56,500 52,900    
Other income (expense), net (100) (100) 0 100    
Other Expenses (111,500) (101,800) (214,600) (175,700)    
Rent expense, SG&A (12,000) (9,400) (24,400) (19,100)    
Advertising Expense (19,700) (16,700) (38,400) (32,600)    
Compensation Expense, Excluding Cost of Good and Service Sold (239,700) (232,300) (479,900) (458,700)    
Impairment charges       (165,900)    
Depreciation, Depletion and Amortization (31,900) (34,100) (63,700) (67,500)    
FloorPlanInterestExpense (17,300) (15,300) (33,300) (31,600)    
Interest Expense, Other (29,200) (26,300) (56,500) (52,900)    
Powersports Segment            
Segment income (loss):            
Segment income (loss) 2,300 0 300 (3,500)    
Interest expense, other, net 800 700 1,600 1,400    
Other income (expense), net (100) 0 0 0    
Segment gross profit 19,700 12,500 29,800 21,100    
Loss on disposal of business       900    
Other Expenses (3,900) (2,900) (6,000) (6,100)    
Rent expense, SG&A 0 300 0 400    
Advertising Expense (600) (300) (1,000) (600)    
Compensation Expense, Excluding Cost of Good and Service Sold (10,000) (7,300) (17,300) (13,500)    
Impairment charges (6,500)          
Depreciation, Depletion and Amortization (1,700) (1,200) (2,900) (2,500)    
FloorPlanInterestExpense (300) (400) (700) (900)    
Interest Expense, Other (800) (700) (1,600) (1,400)    
Payments to Acquire Property, Plant, and Equipment 1,300 1,300 1,700 1,600    
Assets 344,500   344,500   $ 224,400  
Operating segments            
Segment income (loss):            
Segment income (loss) 80,200 103,300 165,800 202,100    
Operating segments | Franchised Dealerships Segment            
Segment income (loss):            
Segment income (loss) 70,700 91,600 142,100 183,600    
Operating segments | EchoPark Segment            
Segment income (loss):            
Segment income (loss) 7,200 11,700 23,400 22,000    
Operating segments | Powersports Segment            
Segment income (loss):            
Segment income (loss) 2,300 0 300 (3,500)    
Reconciling items            
Segment income (loss):            
Interest expense, other, net     (400) (173,800)    
Other income (expense), net 80,300 (69,100) 165,400 28,300    
Impairment charges 0 172,400        
Interest Expense, Other     400 173,800    
New vehicles            
Revenues:            
Total consolidated revenues 1,794,100 1,695,500 3,422,200 3,373,900    
Used vehicles            
Revenues:            
Total consolidated revenues 1,329,700 1,180,700 2,599,300 2,405,700    
Used vehicles | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 814,300 744,900 1,582,900 1,490,600    
Used vehicles | EchoPark Segment            
Revenues:            
Total consolidated revenues 499,000 427,400 990,800 901,100    
Wholesale vehicles            
Revenues:            
Total consolidated revenues 70,500 83,300 142,100 166,100    
Wholesale vehicles | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 43,700 57,800 87,800 112,200    
Wholesale vehicles | EchoPark Segment            
Revenues:            
Total consolidated revenues 25,800 25,400 53,100 52,800    
Parts, service and collision repair            
Revenues:            
Total consolidated revenues 530,200 495,600 1,046,900 970,000    
Parts, service and collision repair | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 515,500 484,900 1,024,800 952,400    
Finance, insurance and other, net            
Revenues:            
Total consolidated revenues 209,500 202,100 412,000 392,800    
Finance, insurance and other, net | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 147,900 144,300 287,200 274,900    
Finance, insurance and other, net | EchoPark Segment            
Revenues:            
Total consolidated revenues 58,100 55,800 119,500 114,500    
Retail New Vehicles [Member]            
Revenues:            
Total consolidated revenues 1,769,300 1,666,100 3,376,800 3,322,400    
Retail New Vehicles [Member] | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 1,731,400 1,639,100 3,316,600 3,276,100    
Fleet New Vehicles [Member]            
Revenues:            
Total consolidated revenues 24,800 29,400 45,400 51,500    
Fleet New Vehicles [Member] | Franchised Dealerships Segment            
Revenues:            
Total consolidated revenues 24,800 29,500 45,400 51,500    
Retail New Vehcile            
Revenues:            
Powersports New Vehicle Revenue $ 37,900 26,900 $ 60,200 $ 46,300    
Insurance Settlement [Member]            
Segment income (loss):            
Other Nonrecurring Gain   $ (10,000)