Note 3. Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
(Dollars in thousands)	2015			2014			2015			2014
Revenue from External Customers
Freight	$	907,809		$	927,942		$	1,754,443		$	1,764,271
Logistics	385,885			413,830			784,064			803,202
Truckload	132,070			148,930			257,837			289,527
Corporate and Eliminations	1,550			1,647			3,401			4,192
	$	1,427,314		$	1,492,349		$	2,799,745		$	2,861,192
Revenue from Internal Customers
Freight	$	9,097		$	12,561		$	18,075		$	24,259
Logistics	20,051			19,820			38,942			36,813
Truckload	10,678			15,134			23,636			30,547
Corporate and Eliminations	18,509			17,152			36,799			31,542
	$	58,335		$	64,667		$	117,452		$	123,161
Operating Income (Loss)
Freight	$	69,516		$	83,021		$	106,892		$	101,586
Logistics	8,004			6,418			16,620			12,592
Truckload	9,313			13,499			16,874			19,879
Corporate and Eliminations	(2,827		)	(238		)	(4,453		)	1,705
	$	84,006		$	102,700		$	135,933		$	135,762