Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Disclosure Of Segment Financial Information

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

	Years Ended December 31,
	2017			2016			2015
Revenues
Truckload Transportation Services	$	1,635,244		$	1,533,981		$	1,644,874
Werner Logistics	417,639			417,172			393,174
Other	62,745			57,062			54,512
Corporate	1,938			1,749			2,297
Subtotal	2,117,566			2,009,964			2,094,857
Inter-segment eliminations	(829		)	(973		)	(1,328		)
Total	$	2,116,737		$	2,008,991		$	2,093,529
Operating Income
Truckload Transportation Services	$	138,059		$	107,713		$	189,850
Werner Logistics	8,683			20,734			16,898
Other	35			(6,177		)	(7,513		)
Corporate	(2,957		)	3,800			1,221
Total	$	143,820		$	126,070		$	200,456

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, 2017, 2016 and 2015. 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.

	2017		2016		2015
Revenues
United States	$	1,837,525	$	1,760,214	$	1,821,026
Foreign countries
Mexico	210,228		183,058		191,453
Other	68,984		65,719		81,050
Total foreign countries	279,212		248,777		272,503
Total	$	2,116,737	$	2,008,991	$	2,093,529
Long-lived Assets
United States	$	1,321,206	$	1,341,703	$	1,134,433
Foreign countries
Mexico	25,309		20,614		19,879
Other	348		321		158
Total foreign countries	25,657		20,935		20,037
Total	$	1,346,863	$	1,362,638	$	1,154,470