Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:
Trucking revenue	$ 81,761	$ 71,951	$ 242,988	$ 219,733
Strategic Capacity Solutions revenue	32,095	28,373	87,218	81,934
Base revenue	113,856	100,324	330,206	301,667
Fuel surcharge revenue	27,966	24,092	83,381	75,990
Total revenue	141,822	124,416	413,587	377,657
Operating expenses and costs:
Purchased transportation	37,470	31,373	103,677	93,626
Salaries, wages and employee benefits	34,771	36,276	105,001	106,507
Fuel and fuel taxes	33,224	31,443	101,837	96,780
Operations and maintenance	12,319	10,961	37,476	32,471
Depreciation and amortization	11,633	11,237	33,399	33,571
Insurance and claims	6,807	5,310	19,220	15,573
Operating taxes and licenses	1,400	1,288	4,104	4,184
Communications and utilities	1,014	969	3,084	3,049
Gain on disposal of assets, net	(626)	(490)	(1,444)	(1,756)
Other	4,014	4,574	11,208	13,142
Total operating expenses and costs	142,026	132,941	417,562	397,147
Operating loss	(204)	(8,525)	(3,975)	(19,490)
Other expenses (income):
Interest expense	967	1,034	2,752	3,043
Other, net	(611)	(32)	(711)	(155)
Total other expenses, net	356	1,002	2,041	2,888
Loss before income taxes	(560)	(9,527)	(6,016)	(22,378)
Income tax expense (benefit)	42	(3,455)	(1,542)	(7,947)
Net loss and Comprehensive loss	$ (602)	$ (6,072)	$ (4,474)	$ (14,431)
Net loss per share information:
Average shares outstanding (Basic) (in Shares)	10,322	10,312	10,324	10,310
Basic loss per share (in Dollars per share)	$ (0.06)	$ (0.59)	$ (0.43)	$ (1.40)
Average shares outstanding (Diluted) (in Shares)	10,322	10,312	10,324	10,310
Diluted loss per share (in Dollars per share)	$ (0.06)	$ (0.59)	$ (0.43)	$ (1.40)