Note 11 - Business Segments

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

(11)  Business Segments

We have seven operating segments that have been aggregated into two reporting segments (Truckload and Logistics) for financial reporting purposes. The primary source of our operating revenue is truckload revenue, which we generate by transporting freight for our customers and report within our Truckload segment. Generally, we are paid by the mile for our services. We also derive truckload revenue from fuel surcharges, loading and unloading activities, equipment detention and other ancillary services.

Our operating revenue also includes revenue reported within our Logistics segment, which consists of revenue from our internal brokerage and intermodal operations, and through our 45% interest in MWL, a third-party provider of logistics services to the transportation industry, until we deconsolidated MWL effective March 28, 2013. Brokerage services involve arranging for another company to transport freight for our customers while we retain the billing, collection and customer management responsibilities. Intermodal services involve the transport of our trailers on railroad flatcars for a portion of a trip, with the balance of the trip using our tractors or, to a lesser extent, contracted carriers.

The following table sets forth for the periods indicated our operating revenue and operating income by segment. We do not prepare separate balance sheets by segment and, as a result, assets are not separately identifiable by segment.

	Three Months Ended June 30,				Six Months Ended June 30,
(Dollars in thousands)	2013		2012		2013		2012
Operating revenue:
Truckload revenue, net of fuel surcharge revenue	$	99,996	$	94,148	$	194,961	$	183,346
Truckload fuel surcharge revenue		26,856		26,121		53,625		51,374
Total Truckload revenue		126,852		120,269		248,586		234,720
Logistics revenue, net of intermodal fuel surcharge revenue(1)		29,721		33,045		67,481		66,481
Intermodal fuel surcharge revenue		4,840		3,650		9,820		7,237
Total Logistics revenue		34,561		36,695		77,301		73,718
Total operating revenue	$	161,413	$	156,964	$	325,887	$	308,438
Operating income:
Truckload	$	11,376	$	10,973	$	21,376	$	18,101
Logistics		1,745		2,310		4,283		4,701
Total operating income	$	13,121	$	13,283	$	25,659	$	22,802

(1) Logistics revenue is net of $2.1 million of inter-segment revenue in the six-month period ended June 30, 2013 for loads transported by our tractors and arranged by MWL prior to the deconsolidation of MWL effective March 28, 2013. Such revenue has been eliminated in consolidation. Inter-segment revenue was $2.4 million and $4.9 million for the three-month and six-month periods ended June 30, 2012.

             Truckload segment depreciation expense was $15.0 million and $14.0 million, and Logistics segment depreciation expense was $1.2 million and $1.0 million, in the three-month periods ended June 30, 2013 and June 30, 2012, respectively. Truckload segment depreciation expense was $29.5 million and $27.7 million, and Logistics segment depreciation expense was $2.4 million and $1.9 million, in the first six months of 2013 and 2012, respectively.