Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Rollforward of goodwill by reportable segment

	TL		LTL		Global Solutions		Total
Goodwill balance as of December 31, 2014	$	319,051	$	197,312	$	153,289	$	669,652
Adjustments to goodwill for purchase accounting	1,598		—		—		1,598
Goodwill related to acquisitions	15,737		—		—		15,737
Goodwill balance as of September 30, 2015	$	336,386	$	197,312	$	153,289	$	686,987

Intangible assets

	September 30, 2015							December 31, 2014
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
TL	$	66,673	$	(12,378	)	$	54,295	$	60,173	$	(8,356	)	$	51,817
LTL	1,358		(1,000		)	358		1,358		(950		)	408
Global Solutions	31,522		(5,936		)	25,586		31,522		(3,869		)	27,653
Total	$	99,553	$	(19,314	)	$	80,239	$	93,053	$	(13,175	)	$	79,878

Estimated amortization expense

Remainder 2015	$	2,262
2016	8,855
2017	8,734
2018	8,471
2019	8,168
2020	7,795
Thereafter	35,954
Total	$	80,239