CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:
Transportation	$ 3,069,056	$ 2,880,901	$ 8,911,683	$ 8,302,160
Sourcing	393,980	432,373	1,190,604	1,287,036
Payment Services	4,326	3,391	10,578	9,998
Total revenues	3,467,362	3,316,665	10,112,865	9,599,194
Costs and expenses:
Purchased transportation and related services	2,575,069	2,450,923	7,506,265	7,019,785
Purchased products sourced for resale	364,179	401,820	1,099,063	1,185,885
Purchased payment services	550	616	1,701	1,894
Personnel expenses	244,621	204,388	703,904	623,042
Other selling, general, and administrative expenses	79,606	82,563	241,242	241,051
Total costs and expenses	3,264,025	3,140,310	9,552,175	9,071,657
Income from operations	203,337	176,355	560,690	527,537
Interest and other expense	(6,204)	(2,635)	(18,587)	(3,284)
Income before provision for income taxes	197,133	173,720	542,103	524,253
Provision for income taxes	72,152	65,983	205,339	201,301
Net income	124,981	107,737	336,764	322,952
Other comprehensive (loss) gain	(8,924)	3,084	(10,003)	(2,550)
Comprehensive income	$ 116,057	$ 110,821	$ 326,761	$ 320,402
Basic net income per share (in dollars per share)	$ 0.85	$ 0.69	$ 2.28	$ 2.03
Diluted net income per share (in dollars per share)	$ 0.85	$ 0.69	$ 2.28	$ 2.03
Basic weighted average shares outstanding (in shares)	146,646	156,924	147,661	158,820
Dilutive effect of outstanding stock awards (in shares)	210	120	158	64
Diluted weighted average shares outstanding (in shares)	146,856	157,044	147,819	158,884