Operating Leases	6 Months Ended
Operating Leases	Jun. 30, 2014
Leases [Abstract]
Operating Leases	Operating Leases The Company has operating leases for certain revenue equipment. A portion of these leases are with a commercial tractor dealership, owned by a board member and certain employees of the Company. Rent expense for these leases were $2.3 million and $4.6 million, (including related-party rental payments totaling $1.8 million and $3.6 million) for the three and six months ended June 30, 2014 and were included in rent and purchased transportation in the consolidated statements of comprehensive income. There was no revenue equipment operating lease expense in the three and six months ended June 30, 2013. The various leases expire from 2014 through 2018. The Company leases certain terminal facilities under operating leases from limited liability companies, whose members include a board member and certain employees of the Company and a commercial tractor dealership owned by a board member and certain employees of the Company. The related-party rental payments were entered into as a result of the acquisition of GTI on November 11, 2013. Rent expense for terminal facilities were $1.0 million and $2.1 million, including related-party rental payments totaling $1.0 million and $2.0 million, for the three and six months ended June 30, 2014 and were included in rent and purchased transportation in the consolidated statements of comprehensive income. There was no significant terminal rent expense in the three and six months ended June 30, 2013. The various leases expire in 2014 through 2018 and the majority of the terminal leases contain options to renew. The Company also has purchase options on the majority of these facilities. The Company exercised its purchase option on the Lathrop, California terminal and finalized this purchase during the second quarter of 2014. The Company paid $2.8 million to a limited liability company, whose members include a board member and certain employees of the Company as a result of this transaction. The Company has a right of first refusal on the sale of the Pacific, Washington location property by the owners. The Company is responsible for all taxes, insurance, and utilities related to the terminal leases. The Company did not have any significant operating leases prior to the GTI acquisition on November 11, 2013. See Notes 6 and 13 for additional information.

The entire disclosure for operating leases of a lessor. This may include a general description of lessor's leasing arrangements for operating leases, including the basis on which contingent rental payments are determined, the existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.

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