Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Disclosure Of Segment Financial Information

The following table summarizes our segment information (in thousands):

	Years Ended December 31,
	2014			2013			2012
Revenues
Truckload Transportation Services	$	1,702,137		$	1,657,854		$	1,699,349
Value Added Services	390,645			361,384			324,155
Other	46,588			11,342			11,782
Corporate	2,803			3,081			4,322
Subtotal	2,142,173			2,033,661			2,039,608
Inter-segment eliminations	(2,884		)	(4,478		)	(3,222		)
Total	$	2,139,289		$	2,029,183		$	2,036,386
Operating Income
Truckload Transportation Services	$	152,992		$	119,597		$	153,142
Value Added Services	7,535			14,664			15,999
Other	(3,991		)	3,947			1,212
Corporate	3,552			1,518			1,091
Total	$	160,088		$	139,726		$	171,444

Schedule Of Revenue And Long-Lived Assets, By Geographical Areas

Information about the geographic areas in which we conduct business is summarized below (in thousands) as of and for the years ended December 31, 2014, 2013 and 2012. Operating revenues for foreign countries include revenues for (i) shipments with an origin or destination in that country and (ii) other services provided in that country. If both the origin and destination are in a foreign country, the revenues are attributed to the country of origin.

	2014		2013		2012
Revenues
United States	$	1,857,624	$	1,768,442	$	1,772,179
Foreign countries
Mexico	187,124		172,009		172,016
Other	94,541		88,732		92,191
Total foreign countries	281,665		260,741		264,207
Total	$	2,139,289	$	2,029,183	$	2,036,386
Long-lived Assets
United States	$	989,815	$	955,543	$	979,798
Foreign countries
Mexico	23,734		21,654		13,659
Other	233		321		386
Total foreign countries	23,967		21,975		14,045
Total	$	1,013,782	$	977,518	$	993,843