Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 25, 2011

Goodwill and Other Intangible Assets

Schedule of goodwill and other intangible assets not subject to amortization and other intangible assets that continue to be subject to amortization

		June 25, 2011							December 25, 2010
		Gross Carrying Amount		Accumulated Amortization & Impairment loss			Net Amount		Gross Carrying Amount		Accumulated Amortization & Impairment loss			Net Amount
Goodwill		$	1,219,256	$	(1,016,827	)	$	202,429	$	1,216,196	$	(1,017,758	)	$	198,438
Other intangible assets not subject to amortization:
	Research models		3,132		—			3,132		3,438		—			3,438
	PCS in process R&D		6,800		—			6,800		6,800		—			6,800
Other intangible assets subject to amortization:
	Backlog		2,942		(2,215	)		727		2,839		(2,109	)		730
	Customer relationships		300,089		(197,740	)		102,349		301,175		(192,345	)		108,830
	Customer contracts		15,259		(15,259	)		—		15,259		(15,259	)		—
	Trademarks and trade names		4,649		(4,629	)		20		5,041		(4,614	)		427
	Standard operating procedures		657		(657	)		—		657		(657	)		—
	Other identifiable intangible assets		4,300		(4,300	)		—		5,428		(4,417	)		1,011
Total other intangible assets		$	337,828	$	(224,800	)	$	113,028	$	340,637	$	(219,401	)	$	121,236

Schedule of changes in the gross carrying amount and accumulated amortization of goodwill

					Adjustments to Goodwill
		Balance at December 25, 2010			Acquisitions		Foreign Exchange/ Other			Balance at June 25, 2011
Research Models and Services
	Gross carrying amount	$	57,876		$	—	$	(576	)	$	57,300
	Accumulated amortization		(4,768	)		—		943			(3,825	)
Preclinical Services
	Gross carrying amount		1,158,320			—		3,636			1,161,956
	Accumulated impairment loss		(1,005,000	)		—		—			(1,005,000	)
	Accumulated amortization		(7,990	)		—		(12	)		(8,002	)
Total
	Gross carrying amount	$	1,216,196		$	—	$	3,060		$	1,219,256
	Accumulated impairment loss		(1,005,000	)		—		—			(1,005,000	)
	Accumulated amortization		(12,758	)		—		931			(11,827	)