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Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2017
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS On September 29, 2017, we completed the acquisition of Dallas Service Center, Inc., an independent truck repair facility, for a purchase price of approximately $8 million, net of cash acquired, which includes $0.8 million in contingent consideration to be paid to the seller provided certain conditions are met.