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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |  |  |
Goodwill - Franchise Segment | $ 229,700 |  |  | $ 229,700 |  | $ 229,800 | $ 221,800
Goodwill - Preowned Segment | 0 |  |  | 0 |  | 0 | 0
Goodwill - Powersports Segment | 24,000 |  |  | 24,000 |  | 24,000 | 9,200
GW Accm Amort Fdealer |  |  |  |  |  | 1,100,000 |
GW Amm Amort Preowned |  |  |  |  |  | 202,900 |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment charges | 1,400 |  | $ 62,600 | (2,400) | $ 62,600 |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill - Preowned Segment | 0 |  |  | 0 |  | 0 | 0
Goodwill and Intangible Asset Impairment |  | $ (1,800) |  | 0 |  |  |
Goodwill | 253,700 |  |  | 253,700 |  | 253,800 | 231,000
Goodwill and Intangible Assets Acquired |  | 11,900 |  | 0 |  |  |
Goodwill - Franchise Segment | 229,700 |  |  | 229,700 |  | 229,800 | 221,800
Goodwill - Powersports Segment | 24,000 |  |  | 24,000 |  | 24,000 | 9,200
PY Acq GW Allocations |  | 12,700 |  | 0 |  |  |
PY Acq GW Allocations Fdealer |  | 9,800 |  | 0 |  |  |
PY Acq GW Allocations Preowned |  | 0 |  | 0 |  |  |
PY Acq GW Allocations Powersports |  | 2,900 |  | 0 |  |  |
Goodwill and Intangible Assets Acquired Fdealer |  | 0 |  | 0 |  |  |
Goodwill and Intangible Assets Acquired Preowned |  | 0 |  | 0 |  |  |
Goodwill and Intangible Assets Acquired Powersports |  | 11,900 |  | 0 |  |  |
Intangible Assets - Reductions from Dispositions Franchised |  |  |  | (100) |  |  |
Intangible Assets - Reductions from dispositions Total |  |  |  | (100) |  |  |
GW Asset Impairment Fdealer |  | (1,800) |  | 0 |  |  |
GW Asset Impairment Preowned |  | 0 |  | 0 |  |  |
GW Asset Impairment Powersports |  | 0 |  | 0 |  |  |
Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Franchise Assets - Franchised | 371,700 |  |  | 371,700 |  | 371,700 | 371,700
Intangible Assets Preowned | 0 |  |  | 0 |  | 0 | 1,900
Intangible Assets - Powersports | 45,700 |  |  | 45,700 |  | 45,700 | 23,100
Franchise Assets - Assets Acquired Franchised |  | 0 |  | 0 |  |  |
Intangible Assets - Assets Acquired Preowned |  | 0 |  | 0 |  |  |
Intangible Assets - Assets Acquired Powersports |  | 22,600 |  | 0 |  |  |
Indefinite-Lived Intangible Assets Acquired |  | 22,600 |  | 0 |  |  |
Franchise Assets - reductions from disp fdealer |  | 0 |  | 0 |  |  |
Intangible Assets - reduction from dispositions preowned |  | (1,900) |  | 0 |  |  |
Intangible Assets - Reductions from dispositions powersports |  | 0 |  | 0 |  |  |
Indefinite-Lived Intangible Assets, Written off Related to Sale of Business Unit |  | 1,900 |  | 0 |  |  |
Goodwill and Intangible Asset Impairment |  | $ (1,800) |  | 0 |  |  |
Other Intangible Assets, net | 417,400 |  |  | 417,400 |  | $ 417,400 | $ 396,700
EchoPark Segment [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment charges |  |  |  | 1,400 |  |  |
Powersports Segment |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment charges | $ 0 |  | $ 0 | $ 0 | $ 0 |  |

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