Consolidated Statements of Income (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Operating Revenue	$ 137,192	$ 127,411	$ 264,884	$ 243,028
Operating Expenses
Salaries, wages, and benefits	41,728	42,320	83,929	82,858
Rent and purchased transportation	1,998	2,533	3,936	4,927
Fuel	42,308	31,012	81,455	60,552
Operations and maintenance	6,150	4,141	11,246	7,571
Operating taxes and licenses	2,244	2,202	4,552	4,025
Insurance and claims	3,958	5,422	6,452	8,373
Communications and utilities	728	860	1,371	1,762
Depreciation	13,664	15,379	26,042	31,102
Other operating expenses	3,389	3,535	6,872	6,527
Gain on disposal of property and equipment	(11,662)	(2,026)	(15,530)	(2,533)
Total operating expenses	104,505	105,378	210,325	205,164
Operating income	32,687	22,033	54,559	37,864
Interest income	208	416	446	819
Income before income taxes	32,895	22,449	55,005	38,683
Federal and state income taxes	10,363	5,796	17,593	10,143
Net income	$ 22,532	$ 16,653	$ 37,412	$ 28,540
Earnings per share	$ 0.25	$ 0.18	$ 0.41	$ 0.31
Weighted average shares outstanding	90,689	90,689	90,689	90,689
Dividends declared per share	$ 0.02	$ 0.02	$ 0.04	$ 0.04