Intangible Assets

6 Months Ended

Jun. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

6. Intangible Assets

The following table sets forth the carrying amount of the Company’s intangible assets as of June 30, 2015 and December 31, 2014 (in thousands):

	June 30, 2015							December 31, 2014
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
Customer relationships	$	404,549	$	(145,313	)	$	259,236	$	405,021	$	(128,510	)	$	276,511
Technology		27,802		(26,170	)		1,632		27,832		(23,442	)		4,390
Tradenames subject to amortization		24,323		(19,974	)		4,349		24,505		(18,513	)		5,992
Backlog		95,010		(85,250	)		9,760		95,015		(80,447	)		14,568
Other		1,020		(525	)		495		1,020		(465	)		555
Total finite-lived intangible assets		552,704		(277,232	)		275,472		553,393		(251,377	)		302,016
Tradenames not subject to amortization		115,737		—			115,737		115,808		—			115,808
Total intangible assets	$	668,441	$	(277,232	)	$	391,209	$	669,201	$	(251,377	)	$	417,824