Commitments And Contingencies	12 Months Ended
Commitments And Contingencies	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES We have committed to property and equipment purchases of approximately $131.0 million at December 31, 2014. In November 2012, the IRS issued a Notice of Proposed Adjustment for tax years 2009 and 2010 related to an employment tax audit which focused on our driver per diem program. Under the program, eligible drivers may elect to receive a nontaxable reimbursement of certain expenses that are otherwise included in and contemplated as a portion of their compensation while away from home. The notice proposed that the nontaxable per diem payments are wages, resulting in additional FICA and FUTA taxes and federal income tax withholding obligations. In December 2013, the IRS issued a "no deficiency" notice, which concluded the audit. The IRS decision had no impact on our financial condition or results of operations because we had not previously accrued a liability related to this issue. We are involved in certain other claims and pending litigation arising in the ordinary course of business. Management believes the ultimate resolution of these matters will not materially affect our consolidated financial statements.

The entire disclosure for commitments and contingencies.