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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Description (Details) $ in Millions | Dec. 11, 2023 USD ($) collisionCenter | Dec. 31, 2024 dealership franchise VehicleBrands CollisionRepairCenters state
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Business Organization [Line Items] |  |
Number of franchises (in franchises) | franchise |  | 198
Number of vehicle brands (in vehicle brands) | VehicleBrands |  | 31
Number of dealership locations (in dealership locations) | dealership |  | 152
Number of collision repair centers (in collision repair centers) | CollisionRepairCenters |  | 37
Number of states (in states) | state |  | 14
Jim Koons Dealerships |  |
Business Organization [Line Items] |  |
Number of new vehicle dealerships acquired (in new vehicle dealerships) | 20 |
Number of collision centers acquired (in collision centers) | 6 |
Aggregate purchase price | $ | $ 1,504.5 |

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