Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Revenue	$ 814,443	$ 674,390	$ 1,502,640	$ 1,297,270
Investment income	332	371	695	745
Costs and expenses:
Purchased transportation	628,933	517,040	1,158,964	994,536
Commissions to agents	63,861	53,715	116,565	102,747
Other operating costs, net of gains on asset dispositions	6,243	4,145	12,829	9,385
Insurance and claims	13,849	11,809	25,706	23,572
Selling, general and administrative	36,752	32,500	72,352	63,977
Depreciation and amortization	6,565	7,125	13,333	13,563
Total costs and expenses	756,203	626,334	1,399,749	1,207,780
Operating income	58,572	48,427	103,586	90,235
Interest and debt expense	718	771	1,486	1,511
Income from continuing operations before income taxes	57,854	47,656	102,100	88,724
Income taxes	21,929	18,164	38,537	33,481
Income from continuing operations	35,925	29,492	63,563	55,243
Income from discontinued operations, net of income taxes		934		1,963
Net income	$ 35,925	$ 30,426	$ 63,563	$ 57,206
Earnings per common share:
Income from continuing operations	$ 0.80	$ 0.64	$ 1.41	$ 1.19
Income from discontinued operations		$ 0.02		$ 0.04
Earnings per common share	$ 0.80	$ 0.66	$ 1.41	$ 1.23
Diluted earnings per share:
Income from continuing operations	$ 0.80	$ 0.64	$ 1.40	$ 1.19
Income from discontinued operations		$ 0.02		$ 0.04
Diluted earnings per share	$ 0.80	$ 0.66	$ 1.40	$ 1.23
Average number of shares outstanding:
Earnings per common share	44,935,000	46,253,000	45,171,000	46,380,000
Diluted earnings per share	45,128,000	46,386,000	45,362,000	46,555,000
Dividends per common share	$ 0.06		$ 0.12