Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenue:
Trucking revenue	$ 71,846	$ 85,309	$ 147,782	$ 168,184
Strategic Capacity Solutions revenue	26,253	17,871	43,848	29,439
Intermodal revenue	5,421	5,294	9,712	10,503
Base revenue	103,520	108,474	201,342	208,126
Fuel surcharge revenue	26,049	30,553	51,900	54,943
Total revenue	129,569	139,027	253,242	263,069
Operating expenses and costs:
Purchased transportation	35,275	31,480	62,253	56,861
Salaries, wages and employee benefits	34,717	34,704	70,230	67,805
Fuel and fuel taxes	30,567	36,332	65,336	71,058
Depreciation and amortization	11,178	12,489	22,335	25,102
Operations and maintenance	10,579	10,415	21,510	20,292
Insurance and claims	5,381	5,700	10,264	11,563
Operating taxes and licenses	1,389	1,375	2,896	2,773
Communications and utilities	1,057	1,049	2,079	2,034
Gain on disposal of assets, net	(724)	(1,341)	(1,266)	(2,256)
Other	4,479	4,612	8,570	8,807
Total operating expenses and costs	133,898	136,815	264,207	264,039
Operating (loss) income	(4,329)	2,212	(10,965)	(970)
Other expenses (income):
Interest expense	1,023	821	2,009	1,564
Other, net	(48)	(26)	(123)	(37)
Total other expenses, net	975	795	1,886	1,527
(Loss) income before income taxes	(5,304)	1,417	(12,851)	(2,497)
Income tax (benefit) expense	(1,818)	819	(4,492)	(379)
Net (loss) income	$ (3,486)	$ 598	$ (8,359)	$ (2,118)
Net loss per share information:
Average shares outstanding (Basic) (in Shares)	10,304	10,306	10,302	10,302
Basic (loss) income per share (in Dollars per share)	$ (0.34)	$ 0.06	$ (0.81)	$ (0.21)
Average shares outstanding (Diluted) (in Shares)	10,304	10,317	10,302	10,302
Diluted (loss) income per share (in Dollars per share)	$ (0.34)	$ 0.06	$ (0.81)	$ (0.21)