Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues	$ 483,432	$ 517,930	$ 949,064	$ 1,006,900
Operating expenses:
Purchased transportation costs	317,455	346,073	625,929	674,564
Personnel and related benefits	71,556	65,794	139,157	127,849
Other operating expenses	76,261	67,286	145,676	132,031
Depreciation and amortization	9,531	7,535	19,067	14,412
Total operating expenses	474,803	486,688	929,829	948,856
Operating income	8,629	31,242	19,235	58,044
Interest expense	5,695	4,373	11,303	8,982
Income before provision for income taxes	2,934	26,869	7,932	49,062
Provision for income taxes	1,136	10,398	3,069	18,987
Net income available to common stockholders	$ 1,798	$ 16,471	$ 4,863	$ 30,075
Earnings per share available to common stockholders:
Basic	$ 0.05	$ 0.43	$ 0.13	$ 0.79
Diluted	$ 0.05	$ 0.42	$ 0.13	$ 0.76
Weighted average common stock outstanding:
Basic	38,319	38,170	38,302	38,090
Diluted	38,368	39,524	38,371	39,432