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Goodwill, Identifiable Intangible Assets, and Other Long-Lived Assets (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill by reportable segments were as follows during the nine months ended September 30, 2020 (in thousands):  

			United States electrical construction and facilities services segment						United States mechanical construction and facilities services segment						United States building services segment						United States industrial services segment						Total
Balance at December 31, 2019			$	142,545					$	299,220					$	289,158					$	332,988					$	1,063,911
Acquisitions and purchase price adjustments			—						398						8,099						—						8,497
Impairments			—						—						—						(225,500)						(225,500)
Balance at September 30, 2020			$	142,545					$	299,618					$	297,257					$	107,488					$	846,908

Schedule of Intangible Assets

Identifiable intangible assets consist of the following as of September 30, 2020 and December 31, 2019 (in thousands):

			September 30, 2020
			Gross Carrying Amount						Accumulated Amortization						Accumulated Impairment Charge						Total
Contract backlog			$	72,045					$	(67,199)					$	—					$	4,846
Developed technology/Vendor network			95,661						(63,784)						—						31,877
Customer relationships			668,755						(312,437)						(4,834)						351,484
Trade names (amortized)			31,348						(22,583)						—						8,765
Trade names (unamortized)			258,640						—						(58,933)						199,707
Total			$	1,126,449					$	(466,003)					$	(63,767)					$	596,679

			December 31, 2019
			Gross Carrying Amount						Accumulated Amortization						Accumulated Impairment Charge						Total
Contract backlog			$	66,745					$	(61,651)					$	—					$	5,094
Developed technology/Vendor network			95,661						(60,156)						—						35,505
Customer relationships			644,755						(277,601)						(4,834)						362,320
Trade names (amortized)			31,148						(21,830)						—						9,318
Trade names (unamortized)			251,440						—						(52,233)						199,207
Total			$	1,089,749					$	(421,238)					$	(57,067)					$	611,444

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- Definition

Tabular disclosure of finite and indefinite lived intangible assets, in total and by major class, including the gross carrying amount and accumulated amortization.

+ References

No definition available.

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- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267

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