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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2019 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |  |
Goodwill | $ 223,398 |  |  | $ 223,398 |  | $ 213,977
Net of accumulated impairment losses | 1,100,000 |  |  | 1,100,000 |  | 1,100,000
Income Tax Benefit Goodwill Impairment |  |  |  |  | $ 55,800 |
Goodwill - Franchise Segment | 147,100 |  |  | 147,100 |  | 147,300
Goodwill - Preowned Segment | 76,300 |  |  | 76,300 |  | 66,700
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 223,398 |  |  | 223,398 |  | 213,977
Impairment charges | 0 | $ 833 | $ 800 | 0 | $ 268,833 |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill - Preowned Segment | 76,300 |  |  | 76,300 |  | 66,700
Net of accumulated impairment losses | 1,100,000 |  |  | 1,100,000 |  | 1,100,000
Franchise assets |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Franchise assets | $ 68,200 |  |  | $ 68,200 |  | $ 64,300

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