Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Goodwill

A summary of changes in Quanta’s goodwill is as follows (in thousands):

	Electric Power Infrastructure Services Division			Pipeline and Industrial Infrastructure Services Division			Total
Balance at December 31, 2018:
Goodwill	$	1,313,078		$	683,284		$	1,996,362
Accumulated impairment	—			(96,483		)	(96,483		)
	1,313,078			586,801			1,899,879
Goodwill related to acquisitions completed in 2019	43,183			67,200			110,383
Purchase price allocation adjustments	1,503			—			1,503
Foreign currency translation adjustments	7,399			3,511			10,910
Balance at December 31, 2019:
Goodwill	1,365,163			753,938			2,119,101
Accumulated impairment	—			(96,426		)	(96,426		)
	1,365,163			657,512			2,022,675
Goodwill related to acquisitions completed in 2020	3,768			6,301			10,069
Purchase price allocation adjustments	(246		)	—			(246		)
Foreign currency translation adjustments	(16,143		)	(9,890		)	(26,033		)
Balance at March 31, 2020:
Goodwill	1,352,542			748,771			2,101,313
Accumulated impairment	—			(94,848		)	(94,848		)
	$	1,352,542		$	653,923		$	2,006,465

Other Intangible Assets

Quanta’s intangible assets and the remaining weighted average amortization periods related to its intangible assets subject to amortization were as follows (in thousands except for weighted average amortization periods, which are in years):

	As of								As of
	March 31, 2020								December 31, 2019
	Remaining Weighted Average Amortization Period in Years	Intangible Assets		Accumulated Amortization			Intangible Assets, Net		Intangible Assets		Accumulated Amortization			Intangible Assets, Net
Customer relationships	6.2	$	527,298	$	(223,606	)	$	303,692	$	532,808	$	(213,915	)	$	318,893
Backlog	2.5	142,144		(139,330		)	2,814		144,704		(141,580		)	3,124
Trade names	14.5	92,182		(27,400		)	64,782		93,396		(26,145		)	67,251
Non-compete agreements	3.1	43,459		(33,234		)	10,225		43,281		(32,868		)	10,413
Patented rights and developed technology	2.1	22,416		(20,789		)	1,627		22,719		(20,682		)	2,037
Curriculum	8.1	11,712		(2,214		)	9,498		11,712		(2,696		)	9,016
Total intangible assets subject to amortization	7.5	839,211		(446,573		)	392,638		848,620		(437,886		)	410,734
Engineering license		3,000		—			3,000		3,000		—			3,000
Total intangible assets		$	842,211	$	(446,573	)	$	395,638	$	851,620	$	(437,886	)	$	413,734

Estimated Future Aggregate Amortization Expense of Intangible Assets

The estimated future aggregate amortization expense of intangible assets subject to amortization as of March 31, 2020 is set forth below (in thousands):

Year Ending December 31:
Remainder of 2020	$	53,001
2021	68,083
2022	63,069
2023	53,825
2024	41,438
Thereafter	113,222
Total	$	392,638