Unaudited Consolidated Statements of Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Operating revenues:
Truckload services	$ 80,204	$ 82,812	$ 240,053	$ 231,046
Brokerage services	98,801	73,285	269,446	195,988
Intermodal services	65,710	39,057	167,190	113,713
Dedicated services	30,941	22,135	87,725	71,406
Value-added services	98,636	95,712	310,916	290,489
Total operating revenues	374,292	313,001	1,075,330	902,642
Operating expenses:
Purchased transportation and equipment rent	186,239	153,277	526,502	427,104
Direct personnel and related benefits	87,189	77,570	260,548	234,352
Operating supplies and expenses	32,119	28,306	90,547	88,757
Commission expense	9,653	8,503	28,298	24,284
Occupancy expense	7,410	7,504	22,574	23,001
General and administrative	7,750	8,968	23,354	23,421
Insurance and claims	7,419	20,562	18,173	35,958
Depreciation and amortization	13,983	11,795	39,448	33,663
Total operating expenses	351,762	316,485	1,009,444	890,540
Income from operations	22,530	(3,484)	65,886	12,102
Interest income	21	29	56	67
Interest expense	(4,324)	(2,537)	(9,866)	(7,292)
Other non-operating income	1,746	721	1,688	1,253
Income (loss) before income taxes	19,973	(5,271)	57,764	6,130
Income tax expense (benefit)	4,918	(1,966)	14,606	2,378
Net income (loss)	$ 15,055	$ (3,305)	$ 43,158	$ 3,752
Earnings (loss) per common share:
Basic	$ 0.53	$ (0.12)	$ 1.52	$ 0.13
Diluted	$ 0.53	$ (0.12)	$ 1.52	$ 0.13
Weighted average number of common shares outstanding:
Basic	28,382	28,441	28,388	28,440
Diluted	28,392	28,444	28,396	28,440
Dividends declared per common share	$ 0.105	$ 0.070	$ 0.315	$ 0.210