Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Rollforward of goodwill by reportable segment

	TES		LTL		Ascent		Total
Goodwill	$	92,926	$	—	$	171,900	$	264,826

Schedule of Accumulated Impairment Loss

The following is a breakdown of the Company's accumulated goodwill impairment losses as of June 30, 2018 by segment (in thousands):

	TES		LTL		Ascent		Total
Accumulated goodwill impairment charges	$	132,408	$	197,312	$	46,763	$	376,483

Intangible assets

Intangible assets as of June 30, 2018 and December 31, 2017 were as follows (in thousands):

	June 30, 2018							December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
TES	$	55,008	$	(20,735	)	$	34,273	$	55,008	$	(18,470	)	$	36,538
LTL	2,498		(1,839		)	659		2,498		(1,748		)	750
Ascent	27,152		(16,022		)	11,130		27,152		(14,792		)	12,360
Total	$	84,658	$	(38,596	)	$	46,062	$	84,658	$	(35,010	)	$	49,648

Estimated amortization expense

Estimated amortization expense for each of the next five years based on intangible assets as of June 30, 2018 is as follows (in thousands):

Remainder 2018	$	3,537
2019	6,819
2020	6,447
2021	6,265
2022	5,826
Thereafter	17,168
Total	$	46,062