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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018
Other Commitments [Line Items] |  |
Lease exit costs accrual | $ 0 | $ 4,634
Maximum exposure associated with general indemnifications | $ 28,000 | $ 13,200
General indemnifications minimum expiration period | 1 year |
General indemnifications maximum expiration period | 3 years |
Percentage of dealership that is accounted for under the equity method | 50.00% | 50.00%
Contingent liability reserve balance after reduction | $ 4,300 | $ 4,300
Other accrued liabilities |  |
Other Commitments [Line Items] |  |
Amount reserved for pending proceedings | 1,500 | 2,100
Other long-term liabilities |  |
Other Commitments [Line Items] |  |
Amount reserved for pending proceedings | $ 300 | $ 300

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