CONSOLIDATED STATEMENTS OF INCOME (LOSS) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Revenue	$ 165,443	$ 183,789	$ 326,552	$ 362,376
Operating expenses:
Salaries, wages and other employee benefits	75,628	78,054	148,750	154,425
Purchased transportation	25,968	26,176	50,944	51,947
Depreciation and amortization	3,696	3,766	7,597	7,525
Maintenance	8,710	9,148	16,189	17,731
Rents and leases	8,916	8,439	17,515	16,386
Owner operators	13,005	11,950	24,974	23,178
Fuel and fuel-related expenses	29,868	34,738	61,443	70,762
Other operating expenses	15,806	16,205	31,439	31,292
Other income	(673)	(132)	(963)	(50)
Total operating expenses	180,924	188,344	357,888	373,196
Loss from continuing operations before the undernoted	(15,481)	(4,555)	(31,336)	(10,820)
Interest expense, net	1,358	1,325	3,278	2,635
Loss from continuing operations before income taxes	(16,839)	(5,880)	(34,614)	(13,455)
Income tax expense (recovery)	134	(157)	(12)	(545)
Net loss from continuing operations	(16,973)	(5,723)	(34,602)	(12,910)
Discontinued operations, net of income taxes (note 3)		1,560	85,301	2,931
Net income (loss)	$ (16,973)	$ (4,163)	$ 50,699	$ (9,979)
Basic and Diluted:
Loss from continuing operations	$ (1.03)	$ (0.35)	$ (2.11)	$ (0.79)
Discontinued operations income		$ 0.10	$ 5.20	$ 0.18
Net income (loss)	$ (1.03)	$ (0.25)	$ 3.09	$ (0.61)
Weighted average number of shares:
Basic	16,432,241	16,399,241	16,417,108	16,383,175
Diluted	16,432,241	16,399,241	16,417,108	16,383,175