Note 10 - Business Segments (Tables)

6 Months Ended

Jun. 30, 2012

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
(Dollars in thousands)
Operating revenue:
Truckload revenue, net of fuel surcharge revenue	$	94,148	$	89,637	$	183,346	$	171,610
Truckload fuel surcharge revenue		26,121		25,526		51,374		47,614
Total Truckload revenue		120,269		115,163		234,720		219,224
Logistics revenue, net of intermodal fuel surcharge revenue(1)		33,045		32,203		66,481		62,721
Intermodal fuel surcharge revenue		3,650		3,769		7,237		7,046
Total Logistics revenue		36,695		35,972		73,718		69,767
Total operating revenue	$	156,964	$	151,135	$	308,438	$	288,991
Operating income:
Truckload	$	10,973	$	9,602	$	18,101	$	14,923
Logistics		2,310		1,757		4,701		4,045
Total operating income	$	13,283	$	11,359	$	22,802	$	18,968