Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

Changes in the carrying amount of goodwill were as follows:

	Truckload		Logistics		Other		Total
Balance at December 31, 2016	$	138,168	$	14,173	$	11,694	$	164,035
Foreign currency translation	—		—		267		267
Balance at June 30, 2017	$	138,168	$	14,173	$	11,961	$	164,302

Schedule of Identifiable Intangible Assets Other Than Goodwill

The identifiable intangible assets other than goodwill listed below are included in other noncurrent assets on the condensed consolidated balance sheets.

	June 30, 2017						December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer lists	$	10,500	$	1,973	$	8,527	$	10,500	$	1,445	$	9,055
Trade names	1,400		505		895		1,400		272		1,128
Total intangible assets	$	11,900	$	2,478	$	9,422	$	11,900	$	1,717	$	10,183

Schedule Estimated Future Amortization Expense

Estimated future amortization expense related to intangible assets is as follows:

Remaining 2017	$	765
2018	1,416
2019	1,145
2020	950
2021	950
2022 and thereafter	4,196
	$	9,422