Commitments and Contingencies - Additional Information (Details) - USD ($) |
3 Months Ended | |
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Mar. 31, 2018 |
Dec. 31, 2017 |
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| Commitments and Contingencies Disclosure [Abstract] | ||
| Lease exit costs accrual | $ 10,777,000 | $ 6,478,000 |
| Other Commitments [Line Items] | ||
| Maximum exposure associated with general indemnifications | $ 5,000,000 | $ 6,000,000 |
| 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 | $ 2,800,000 | $ 2,800,000 |
| Acquired business, earnings targets, maximum term | 10 years | |
| Maximum aggregate earnout payment | $ 80,000,000 | |
| Other accrued liabilities | ||
| Other Commitments [Line Items] | ||
| Amount reserved for pending proceedings | 4,500,000 | 3,000,000 |
| Other long-term liabilities | ||
| Other Commitments [Line Items] | ||
| Amount reserved for pending proceedings | $ 200,000 | $ 200,000 |
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- Definition Acquired business earnings targets maximum term. No definition available.
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- Definition Contingent liability reserve balance. No definition available.
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- Definition General indemnifications maximum expiration period. No definition available.
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- Definition General indemnifications minimum expiration period. No definition available.
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- Definition Lease exit accruals. No definition available.
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- Definition Legal matters amount reserved for pending proceedings. No definition available.
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- Definition Maximum aggregate earn-out payment. No definition available.
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- Definition Undiscounted amount of the accrual for environmental loss contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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