Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets [Abstract]

Schedule of Carrying Amount of Goodwill

					Specialty
(in thousands)	Civil			Building	Contractors		Total
Gross goodwill	$	492,074	$	424,724	$	156,193	$	1,072,991
Accumulated impairment		(76,716)		(411,269)		—		(487,985)
Balance as of December 31, 2018		415,358		13,455		156,193		585,006
Second quarter 2019 impairment		(210,215)		(13,455)		(156,193)		(379,863)
Balance as of September 30, 2019(a)	$	205,143	$	—	$	—	$	205,143

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(a)As of September 30, 2019, accumulated impairment was $867.8 million.

Schedule of Intangible Assets

	As of September 30, 2019								Weighted
					Accumulated				Average
				Accumulated	Impairment		Carrying		Amortization
(in thousands)	Cost			Amortization	Charge		Value		Period
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)		74,350		(20,645)		(23,232)		30,473	20 years
Contractor license		6,000		—		(6,000)		—	N/A
Customer relationships		39,800		(20,784)		(16,645)		2,371	12 years
Construction contract backlog		73,706		(73,706)		—		—	N/A
Total	$	311,456	$	(115,135)	$	(113,067)	$	83,254
	As of December 31, 2018								Weighted
					Accumulated				Average
				Accumulated	Impairment		Carrying		Amortization
(in thousands)	Cost			Amortization	Charge		Value		Period
Trade names (non-amortizable)	$	117,600	$	—	$	(67,190)	$	50,410	Indefinite
Trade names (amortizable)		74,350		(18,780)		(23,232)		32,338	20 years
Contractor license		6,000		—		(6,000)		—	N/A
Customer relationships		39,800		(19,992)		(16,645)		3,163	12 years
Construction contract backlog		73,706		(73,706)		—		—	N/A
Total	$	311,456	$	(112,478)	$	(113,067)	$	85,911