Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Revenue	$ 688,197	$ 622,880
Investment income	363	374
Costs and expenses:
Purchased transportation	530,031	477,496
Commissions to agents	52,704	49,032
Other operating costs, net of gains on asset dispositions	6,586	5,240
Insurance and claims	11,857	11,763
Selling, general and administrative	35,600	31,477
Depreciation and amortization	6,768	6,438
Total costs and expenses	643,546	581,446
Operating income	45,014	41,808
Interest and debt expense	768	740
Income from continuing operations before income taxes	44,246	41,068
Income taxes	16,608	15,317
Income from continuing operations	27,638	25,751
Income from discontinued operations, net of income taxes		1,029
Net income	$ 27,638	$ 26,780
Earnings per common share:
Income from continuing operations	$ 0.61	$ 0.55
Income from discontinued operations		$ 0.02
Earnings per common share	$ 0.61	$ 0.58
Diluted earnings per share:
Income from continuing operations	$ 0.61	$ 0.55
Income from discontinued operations		$ 0.02
Diluted earnings per share	$ 0.61	$ 0.57
Average number of shares outstanding:
Earnings per common share	45,407,000	46,507,000
Diluted earnings per share	45,596,000	46,722,000
Dividends per common share	$ 0.06