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Acquisitions (Details) - store	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Baltimore, Maryland [Member] | Collision Centers [Member]
Business Acquisition [Line Items]
Number of stores purchased	1
South Florida [Member] | Collision Centers [Member]
Business Acquisition [Line Items]
Number of stores purchased		1
South Florida [Member] | Dealerships [Member]
Business Acquisition [Line Items]
Number of stores purchased		1
Seattle [Member] | Collision Centers [Member]
Business Acquisition [Line Items]
Number of stores purchased		1

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- Definition

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- Definition

The number of businesses acquired by the entity during the period.

+ References

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- Details

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