Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Operating revenue	$ 123,490	$ 153,618	$ 389,950	$ 452,405
Operating expenses:
Salaries, wages and employee benefits	32,028	39,388	105,536	113,930
Fuel expense	12,960	28,449	47,195	92,156
Depreciation and amortization	8,702	10,792	29,951	33,395
Insurance and claims	5,405	6,466	17,502	18,353
Operations and maintenance	11,533	10,649	34,083	35,999
Purchased transportation	40,613	43,755	122,029	129,543
Operating taxes and licenses	1,439	1,414	4,221	4,215
Communications and utilities	989	1,026	2,732	3,159
Gain on disposal of assets, net	(3,008)	(302)	(5,766)	(824)
Restructuring Charges	2,893		2,893
Other	4,477	4,469	13,775	12,412
Total operating expenses	118,031	146,106	374,151	442,338
Operating income	5,459	7,512	15,799	10,067
Other expenses:
Interest expense, net	$ 493	816	$ 1,672	2,271
Defense costs		$ 65		$ 2,593
Loss on extinguishment of debt			$ 750
Other, net	$ 78	$ 4	650	$ 52
Total other expenses, net	571	885	3,072	4,916
Income before income taxes	4,888	6,627	12,727	5,151
Income tax expense	2,161	2,621	5,595	2,418
Net income and comprehensive income	$ 2,727	$ 4,006	$ 7,132	$ 2,733
Net income per share information:
Average shares outstanding (basic) (in shares)	10,442	10,357	10,439	10,350
Basic earnings per share (in dollars per share)	$ 0.26	$ 0.39	$ 0.68	$ 0.26
Average shares outstanding (diluted) (in shares)	10,470	10,476	10,515	10,482
Diluted earnings per share (in dollars per share)	$ 0.26	$ 0.38	$ 0.68	$ 0.26