Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020
Revenue	$ 1,287,534	$ 927,566
Investment income	684	1,167
Costs and expenses:
Purchased transportation	998,285	709,257
Commissions to agents	100,009	75,376
Other operating costs, net of gains on asset sales/dispositions	7,642	8,306
Insurance and claims	21,505	24,957
Selling, general and administrative	45,408	45,327
Depreciation and amortization	12,101	11,505
Total costs and expenses	1,184,950	874,728
Operating income	103,268	54,005
Interest and debt expense	1,042	952
Income before income taxes	102,226	53,053
Income taxes	24,986	12,158
Net income	$ 77,240	$ 40,895
Diluted earnings per share	$ 2.01	$ 1.04
Average diluted shares outstanding	38,404,000	39,254,000
Dividends per common share	$ 0.210	$ 0.185