Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS The Company leases land from a trust in which the Company’s principal stockholder is the sole trustee. The annual rent payments under this lease are $1.00 per year. The Company is responsible for all real estate taxes and maintenance costs related to the property, which were $52,000 in 2015 and are recorded as expenses in the Consolidated Statements of Income. The Company has made leasehold improvements to the land totaling approximately $6.5 million for facilities used for business meetings and customer promotion. The Company transacts business with TDR Transportes, S.A. de C.V. (“TDR”), a truckload carrier in the Republic of Mexico, for certain purchased transportation needs. The Company recorded operating revenues from TDR of approximately $4,421,000 in 2015, $4,623,000 in 2014 and $4,141,000 in 2013 related primarily to leasing revenue equipment and a terminal building. The Company recorded purchased transportation expense to TDR of approximately $477,000 in 2015, $651,000 in 2014 and $603,000 in 2013. The Company also sells used revenue equipment to this entity. These sales totaled $164,000 in 2015, $2,154,000 in 2014 and $2,275,000 in 2013, and the Company recognized net gains of $41,000 in 2015, $858,000 in 2014 and $1,449,000 in 2013. The Company had receivables from TDR, primarily related to the leases and revenue equipment sales, of $504,000 at December 31, 2015, $442,000 at December 31, 2014 and $858,000 at December 31, 2013.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.