v3.26.1
Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Intangible Asset, Goodwill and Other [Abstract]                
Goodwill - Franchise Segment $ 391,500     $ 391,500     $ 394,500 $ 331,200
Goodwill - Preowned Segment 0     0     0 0
Goodwill - Powersports Segment 40,900     40,900     27,300 27,300
GW Accm Amort Fdealer             1,100,000  
GW Amm Amort Preowned             202,900  
Intangible Asset, Finite-Lived [Line Items]                
Impairment charges 0   $ (172,400) (400) $ (173,800)      
Goodwill [Line Items]                
Goodwill - Preowned Segment 0     0     0 0
Intangible Asset, Including Goodwill, Impairment Loss   $ (700)            
Goodwill 432,400     432,400     421,800 358,500
Goodwill and Intangible Assets Acquired   64,200   13,600        
Goodwill - Franchise Segment 391,500     391,500     394,500 331,200
Goodwill - Powersports Segment 40,900     40,900     27,300 27,300
PY Acq GW Allocations   (200)            
PY Acq GW Allocations Fdealer           $ (200)    
PY Acq GW Allocations Preowned   0            
PY Acq GW Allocations Powersports   0            
Goodwill and Intangible Assets Acquired Fdealer   64,200   0        
Goodwill and Intangible Assets Acquired Preowned   0   0        
Goodwill and Intangible Assets Acquired Powersports   0   13,600        
Intangible Assets - Reductions from Dispositions Franchised       (3,000)        
Intangible Assets - Reductions from dispositions Total       (3,000)        
GW Asset Impairment Fdealer   (700)            
GW Asset Impairment Preowned   0   0        
GW Asset Impairment Powersports   0   0        
Intangible Asset, Indefinite-Lived [Line Items]                
Franchise Assets - Franchised 396,400     396,400     413,600 382,600
Intangible Assets Preowned 0     0     0 0
Intangible Assets - Powersports 40,500     40,500     40,500 47,700
Franchise Assets - Assets Acquired Franchised   202,000            
Intangible Assets - Assets Acquired Preowned   0            
Intangible Assets - Assets Acquired Powersports   0            
Intangible Asset, Indefinite-Lived, Acquired   202,000            
Franchise Assets - reductions from disp fdealer   (5,100)   (17,200)        
Intangible Assets - reduction from dispositions preowned   0   0        
Intangible Assets - Reductions from dispositions powersports   (700)   0        
Intangible Asset, Indefinite-Lived, Divestiture   5,800   17,200        
Franchise Assets Reductions from impairment fdealer   (165,900)            
Intangible assets - Reductions from impairment preowned   0            
Intangible assets - Reductions from impairment powersports   (6,500)            
Intangible Asset, Including Goodwill, Impairment Loss   (700)            
Other Intangible Assets, net 436,900     $ 436,900     $ 454,100 $ 430,300
Reductions from impairment, total   $ (172,400)            
EchoPark Segment [Member]                
Intangible Asset, Finite-Lived [Line Items]                
Impairment charges         $ 200      
Powersports Segment                
Intangible Asset, Finite-Lived [Line Items]                
Impairment charges $ 6,500