Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Carrying Amount of Intangible Assets

The following table sets forth the carrying amount of the Company’s intangible assets as of March 31, 2016 and December 31, 2015 (in thousands):

	March 31, 2016							December 31, 2015
			Accumulated							Accumulated
	Gross		Amortization			Net		Gross		Amortization			Net
Customer relationships	$	366,169	$	(156,458	)	$	209,711	$	365,777	$	(148,679	)	$	217,098
Technology		27,090		(26,364	)		726		27,003		(26,206	)		797
Tradenames subject to amortization		18,314		(16,787	)		1,527		18,293		(16,657	)		1,636
Backlog		95,029		(90,783	)		4,246		95,014		(89,427	)		5,587
Other		1,020		(615	)		405		1,020		(585	)		435
Total finite-lived intangible assets		507,622		(291,007	)		216,615		507,107		(281,554	)		225,553
Tradenames not subject to amortization		109,304		—			109,304		109,093		—			109,093
Total intangible assets	$	616,926	$	(291,007	)	$	325,919	$	616,200	$	(281,554	)	$	334,646