Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Rollforward of goodwill by reportable segment

	TL			LTL		Global Solutions		Total
Goodwill balance as of December 31, 2015	$	254,940		$	197,312	$	230,558	$	682,810
Adjustments to goodwill for purchase accounting	(797		)	—		—		(797		)
Goodwill balance as of June 30, 2016	$	254,143		$	197,312	$	230,558	$	682,013

Intangible assets

	June 30, 2016							December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
TL	$	57,468	$	(12,122	)	$	45,346	$	57,468	$	(9,714	)	$	47,754
LTL	1,358		(1,050		)	308		1,358		(1,017		)	341
Global Solutions	38,427		(12,674		)	25,753		38,427		(10,828		)	27,599
Total	$	97,253	$	(25,846	)	$	71,407	$	97,253	$	(21,559	)	$	75,694

Estimated amortization expense

Remainder 2016	$	4,278
2017	8,447
2018	8,183
2019	7,879
2020	7,506
2021	7,324
Thereafter	27,790
Total	$	71,407