Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

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


	Electric Power Division			Oil and Gas Infrastructure Division			Total
Goodwill balance at December 31, 2014	$	1,223,224		$	373,471		$	1,596,695
Goodwill acquired during 2015		27,197			22,357			49,554
Purchase price allocation adjustments		750			(8,863	)		(8,113	)
Foreign currency translation adjustments		(23,811	)		(17,394	)		(41,205	)

Goodwill balance at September 30, 2015	$	1,227,360		$	369,571		$	1,596,931

Other Intangible Assets

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


	As of							As of							As of
	September 30, 2015							December 31, 2014							September 30, 2015
	Intangible Assets		Accumulated Amortization			Intangible Assets, Net		Intangible Assets		Accumulated Amortization			Intangible Assets, Net		Remaining Weighted Average Amortization Period in Years
Customer relationships	$	236,677	$	(75,235	)	$	161,442	$	235,851	$	(63,764	)	$	172,087		9.9
Backlog		131,312		(125,410	)		5,902		133,704		(122,265	)		11,439		0.9
Trade names		51,298		(8,340	)		42,958		49,664		(6,278	)		43,386		18.8
Non-compete agreements		28,583		(22,633	)		5,950		27,659		(21,365	)		6,294		3.5
Patented rights and developed technology		22,476		(13,315	)		9,161		22,073		(11,695	)		10,378		4.2

Total intangible assets subject to amortization	$	470,346	$	(244,933	)	$	225,413	$	468,951	$	(225,367	)	$	243,584		11.0

Estimated Future Aggregate Amortization Expense of Intangible Assets

The estimated future aggregate amortization expense of intangible assets subject to amortization as of September 30, 2015 is set forth below (in thousands):


For the Fiscal Year Ending December 31,
Remainder of 2015	$	8,891
2016		29,365
2017		23,965
2018		23,273
2019		22,351
Thereafter		117,568

Total	$	225,413