Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 24, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in the Gross Carrying Amount and Accumulated Amortization of Goodwill

The following table provides a rollforward of the Company’s goodwill:

			Adjustments to Goodwill
	December 26, 2015		Acquisitions		Transfers			Foreign Exchange			September 24, 2016
	(in thousands)
RMS	$	58,167	$	—	$	(342	)	$	(479	)	$	57,346
DSA	247,050		293,973		—			(7,914		)	533,109
Manufacturing	133,612		46,859		342			(7,692		)	173,121
Total	$	438,829	$	340,832	$	—		$	(16,085	)	$	763,576

Schedule of Finite-Lived Intangible Assets

The following table displays intangible assets, net by major class:

	September 24, 2016							December 26, 2015
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
	(in thousands)
Backlog	$	8,645	$	(4,979	)	$	3,666	$	50,568	$	(50,554	)	$	14
Technology	74,304		(11,910		)	62,394		60,350		(5,911		)	54,439
Trademarks and trade names	8,439		(4,029		)	4,410		11,495		(5,944		)	5,551
Other	12,390		(5,159		)	7,231		14,711		(7,285		)	7,426
Other intangible assets	103,778		(26,077		)	77,701		137,124		(69,694		)	67,430
Client relationships	518,050		(199,299		)	318,751		396,537		(183,163		)	213,374
Intangible assets	$	621,828	$	(225,376	)	$	396,452	$	533,661	$	(252,857	)	$	280,804