Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Mar. 26, 2016
Revenue	$ 780,908	$ 711,644
Investment income	414	380
Costs and expenses:
Purchased transportation	595,523	540,328
Commissions to agents	63,798	59,092
Other operating costs, net of gains on asset sales/dispositions	6,897	7,407
Insurance and claims	14,513	14,213
Selling, general and administrative	38,323	34,614
Depreciation and amortization	9,934	8,438
Total costs and expenses	728,988	664,092
Operating income	52,334	47,932
Interest and debt expense	1,083	889
Income before income taxes	51,251	47,043
Income taxes	18,868	17,859
Net income	$ 32,383	$ 29,184
Earnings per common share	$ 0.77	$ 0.69
Diluted earnings per share	$ 0.77	$ 0.69
Average number of shares outstanding:
Earnings per common share	41,879,000	42,395,000
Diluted earnings per share	41,998,000	42,489,000
Dividends per common share	$ 0.09	$ 0.08