Charles River Laboratories International (CRL) 10-Q 7 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 28, 2014	Jul. 24, 2014
Document and Entity Information [Abstract]	'	'
Entity Common Stock, Shares Outstanding	'	46,677,079
Entity Registrant Name	'CHARLES RIVER LABORATORIES INTERNATIONAL INC	'
Entity Central Index Key	'0001100682	'
Current Fiscal Year End Date	'--12-27	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	28-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Amendment Flag	'false	'
Entity Well-known Seasoned Issuer	'Yes	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Product revenue	$130,176	$121,858	$257,199	$248,145
Service revenue	211,003	171,075	383,348	336,026
Revenue	341,179	292,933	640,547	584,171
Costs and expenses	'	'	'	'
Cost of products sold	67,591	66,627	134,177	132,660
Cost of services provided	147,954	123,736	271,923	244,730
Selling, general and administrative	67,756	54,919	132,523	112,118
Amortization of other intangibles	6,853	4,463	11,193	8,712
Operating income	51,025	43,188	90,731	85,951
Other income (expense)	'	'	'	'
Interest income	222	236	427	333
Interest expense	-3,373	-7,544	-6,174	-15,824
Other income (expense), net	2,667	967	8,543	2,035
Income from continuing operations, before income taxes	50,541	36,847	93,527	72,495
Provision (benefit) for income taxes	14,081	8,219	24,439	17,941
Income from continuing operations, net of income taxes	36,460	28,628	69,088	54,554
Income (loss) from discontinued operations, net of taxes	-644	-915	-914	-1,070
Net income	35,816	27,713	68,174	53,484
Less: Net income attributable to noncontrolling interests	-552	-429	-678	-622
Net income attributable to common shareowners	$35,264	$27,284	$67,496	$52,862
Basic:	'	'	'	'
Continuing operations attributable to common shareowners (in dollars per share)	$0.76	$0.58	$1.46	$1.12
Discontinued operations (in dollars per share)	($0.01)	($0.02)	($0.02)	($0.02)
Net income attributable to common shareowners (in dollars per share)	$0.75	$0.57	$1.44	$1.10
Diluted:	'	'	'	'
Continuing operations attributable to common shareowners (in dollars per share)	$0.75	$0.58	$1.43	$1.11
Discontinued operations (in dollars per share)	($0.01)	($0.02)	($0.02)	($0.02)
Net income attributable to common shareowners (in dollars per share)	$0.74	$0.56	$1.41	$1.09

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Net income	$35,816	$27,713	$68,174	$53,484
Foreign currency translation adjustment	12,902	-6,091	7,884	-26,024
Defined benefit plan gains (losses) and prior service costs not yet recognized as components of net periodic pension cost:	'	'	'	'
Amortization of prior service costs and net gains and losses	291	760	580	1,497
Comprehensive income, before tax	49,009	22,382	76,638	28,957
Income tax expense (benefit) related to items of other comprehensive income	129	296	148	1,200
Comprehensive income, net of tax	48,880	22,086	76,490	27,757
Less: comprehensive income related to noncontrolling interests	-489	-577	-140	-806
Comprehensive income attributable to common shareholders	$48,391	$21,509	$76,350	$26,951

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$117,012	$155,927
Trade receivables, net	274,504	220,630
Inventories	92,621	89,396
Other current assets	107,709	85,847
Current assets of discontinued businesses	856	750
Total current assets	592,702	552,550
Property, plant and equipment, net	687,664	676,182
Goodwill	297,005	230,701
Other intangibles, net	181,269	84,537
Deferred tax asset	19,746	23,671
Other assets	81,815	61,964
Long-term assets of discontinued businesses	3,261	3,151
Total assets	1,863,462	1,632,756
Current liabilities	'	'
Current portion of long-term debt and capital leases	31,932	21,437
Accounts payable	35,218	31,770
Accrued compensation	59,224	58,461
Deferred revenue	61,870	54,177
Accrued liabilities	67,462	56,712
Other current liabilities	13,761	22,546
Current liabilities of discontinued businesses	2,181	1,931
Total current liabilities	271,648	247,034
Long-term debt and capital leases	781,617	642,352
Other long-term liabilities	103,305	70,632
Long-term liabilities of discontinued businesses	8,271	8,080
Total liabilities	1,164,841	968,098
Commitments and contingencies	'	'
Redeemable noncontrolling interest	23,483	20,581
Shareholders' equity	'	'
Preferred stock, $0.01 par value; 20,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.01 par value; 120,000,000 shares authorized; 83,694,580 issued and 46,899,188 shares outstanding at June 28, 2014 and 82,522,905 issued and 47,553,841 shares outstanding at December 28, 2013	836	825
Additional paid-in capital	2,257,597	2,206,155
Accumulated deficit	-197,977	-265,473
Treasury stock, at cost, 36,795,392 shares and 34,969,064 shares at June 28, 2014 and December 28, 2013, respectively	-1,402,852	-1,305,880
Accumulated other comprehensive income	14,211	5,357
Total shareholders' equity	671,815	640,984
Noncontrolling interests	3,323	3,093
Stockholder's Equity, Including Noncontrolling Interest and Redeemable Noncontrolling Interest	698,621	664,658
Total liabilities and equity	$1,863,462	$1,632,756

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 28, 2014	Dec. 28, 2013
Statement of Financial Position [Abstract]	'	'
Preferred stock, par value (in dollars per share)	$0.01	$0.01
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	83,694,580	82,522,905
Common Stock, Shares, Outstanding	46,899,188	47,553,841
Treasury stock, shares	36,795,392	34,969,064

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013
Cash flows relating to operating activities	'	'
Net income	$68,174	$53,484
Less: Income (loss) from discontinued operations	-914	-1,070
Income from continuing operations	69,088	54,554
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:	'	'
Depreciation and amortization	44,352	40,420
Amortization of debt issuance costs and discounts	868	8,695
Stock-based compensation	14,881	12,184
Deferred income taxes	6,643	6,236
Gain on investments in limited partnerships	-8,180	-1,305
Other, net	517	156
Changes in assets and liabilities:	'	'
Trade receivables	-31,161	-26,450
Inventories	-2,502	-882
Other assets	-14,928	-4,313
Accounts payable	4,404	1,143
Accrued compensation	-1,229	-1,136
Deferred revenue	1,942	-2,864
Accrued liabilities	10,012	-820
Taxes payable and prepaid taxes	-6,802	-4,292
Other liabilities	-2,467	-2,383
Net cash provided by operating activities	85,438	78,943
Cash flows relating to investing activities	'	'
Acquisition of businesses, net of cash acquired	-183,151	-24,218
Capital expenditures	-20,505	-16,223
Purchases of investments	-9,734	-6,413
Proceeds from sale of investments and distributions from investments in limited partnerships	12,818	6,808
Other, net	-1,926	59
Net cash used in investing activities	-202,498	-39,987
Cash flows relating to financing activities	'	'
Proceeds from long-term debt and revolving credit agreement	237,920	423,309
Proceeds from exercises of stock options	36,534	36,351
Payments on long-term debt, capital lease obligation and revolving credit agreement	-98,404	-461,184
Purchase of treasury stock	-101,609	-26,899
Other, net	3,771	-994
Net cash used in financing activities	78,212	-29,417
Discontinued operations	'	'
Net cash used in operating activities	-689	-946
Net cash provided by discontinued operations	-689	-946
Effect of exchange rate changes on cash and cash equivalents	622	-4,757
Net change in cash and cash equivalents	-38,915	3,836
Cash and cash equivalents, beginning of period	155,927	109,685
Cash and cash equivalents, end of period	$117,012	$113,521

CONDENSED_CONSOLIDATED_STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $)	Total	Accumulated (Deficit) Earnings	Accumulated Other Comprehensive Income	Common Stock	Additional Paid-in Capital	Treasury Stock	Non-controlling Interest
In Thousands, unless otherwise specified
December 28, 2013 at Dec. 28, 2013	$664,658	($265,473)	$5,357	$825	$2,206,155	($1,305,880)	$23,674
Components of comprehensive income, net of tax:	'	'	'	'	'	'	'
Net income	68,174	67,496	'	'	'	'	678
Other comprehensive income (loss)	8,316	'	8,854	'	'	'	-538
Comprehensive income, net of tax	76,490	'	'	'	'	'	140
Adjustment of redeemable noncontrolling interest to fair value	0	'	'	'	-2,992	'	2,992
Tax benefit associated with stock issued under employee compensation plans	3,125	'	'	'	3,125	'	'
Issuance of stock under employee compensation plans	36,439	'	'	11	36,428	'	'
Acquisition of treasury shares	-96,972	'	'	'	0	-96,972	'
Stock-based compensation	14,881	'	'	'	14,881	'	'
June 28, 2014 at Jun. 28, 2014	$698,621	($197,977)	$14,211	$836	$2,257,597	($1,402,852)	$26,806

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 28, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	BASIS OF PRESENTATION
	The condensed consolidated interim financial statements of Charles River Laboratories International, Inc. (the Company) are unaudited, and certain information and footnote disclosures related thereto normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States (U.S. GAAP) have been omitted in accordance with Rule 10-01 of Regulation S-X. In the opinion of management, the accompanying unaudited condensed consolidated financial statements were prepared following the same policies and procedures used in the preparation of the audited financial statements and reflect all adjustments (consisting of normal recurring adjustments) considered necessary to state fairly the Company's financial position and results of operations. The results of operations for the interim periods are not necessarily indicative of the results for the entire fiscal year. These condensed consolidated financial statements should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 28, 2013. Certain reclassifications have been made to prior periods' financial statements to conform with the current period presentation.
	During the quarter ended June 28, 2014, the Company revised its reportable segments to ensure alignment with the Company's view of the business following its acquisition of the contract research organization (CRO) services division of Galapagos N.V. (Early Discovery). The Company reviewed the new and existing markets addressed by the business, the recently revised go-to-market strategy, long-term operating margins, the discrete financial information available to its Chief Operating Decision Maker (CODM) and considered how its businesses aggregate based on these qualitative and quantitative factors. Based on this review, the Company identified three reportable segments: Research Models and Services (RMS), Discovery and Safety Assessment (DSA) and Manufacturing Support (Manufacturing). The Company will report segment results on this basis beginning in the quarter ended June 28, 2014 and retrospectively for all comparable prior periods.
	The revised reportable segments are as follows:
	Research Models and Services	Discovery and Safety Assessment	Manufacturing Support
	Research Models	Discovery Services (1)	Endotoxin and Microbial Detection
	Research Model Services (2)	Safety Assessment	Avian Vaccine Services
			Biologics Testing Solutions
	(1) Discovery Services includes the Early Discovery businesses, which were acquired on April 1, 2014.
	(2) Research Model Services include Genetically Engineered Models and Services (GEMS), Research Animal Diagnostic Services (RADS), and Insourcing Solutions (IS).
	Prior to recasting the reportable segments, the businesses were reported in two segments as follows:
	Research Models and Services	Preclinical Services
	Research Models (3)	Discovery Services
	Research Model Services (4)	Safety Assessment
	Endotoxin and Microbial Detection	Biologics Testing Solutions
	(3) Research Models included Avian Vaccine Services.
	(4) Research Model Services included GEMS, RADS, IS and Discovery Research Services.
	Use of Estimates
	The preparation of condensed consolidated financial statements in accordance with U.S. GAAP requires that the Company makes estimates and judgments that may affect the reported amounts of assets, liabilities, revenues, expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, including those related to revenue recognition, impairment of long-lived assets, equity investments, income taxes including the valuation allowance for deferred tax assets, defined benefit pension plans, contingencies and share-based compensation. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ from these estimates under different assumptions or conditions. Changes in estimates are reflected in reported results in the period in which they become known.
	Summary of Significant Accounting Policies
	The Company’s significant accounting policies are described in Note 1, “Description of Business and Summary of Significant Accounting Policies,” in the 2013 Annual Report on Form 10-K.
	Consolidation
	The Company's condensed consolidated financial statements reflect its financial statements, those of its wholly-owned subsidiaries and those of certain variable interest entities where the Company is the primary beneficiary. For consolidated entities in which the Company owns or is exposed to less than 100% of the economics, the Company records net income (loss) attributable to noncontrolling interests in its condensed consolidated statements of income equal to the percentage of the economic or ownership interest retained in such entities by the respective noncontrolling parties. Intercompany balances and transactions are eliminated in consolidation.
	In determining whether the Company is the primary beneficiary of an entity and therefore required to consolidate, the Company applies a qualitative approach that determines whether it has both (1) the power to direct the economically significant activities of the entity and (2) the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant to that entity. The Company continuously assesses whether it is the primary beneficiary of a variable interest entity as changes to existing relationships or future transactions may result in the Company consolidating or deconsolidating certain of its variable interest entities.
	Recent Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-08, "Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity." ASU 2014-08 changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. The ASU is effective for annual and interim periods beginning after December 15, 2014. The Company is evaluating the impact the adoption will have on its consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers."  The standard requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. Early adoption is not permitted. The ASU is effective for annual and interim periods beginning after December 15, 2016. The Company has not yet selected a transition method and is evaluating the impact the adoption will have on its consolidated financial statements and related disclosures.

Business_Acquisitions

Business Acquisitions	6 Months Ended
	Jun. 28, 2014
Business Combinations [Abstract]	'
Business Combination Disclosure [Text Block]	'
	BUSINESS ACQUISITIONS
	Early Discovery
	On April 1, 2014, the Company acquired Early Discovery consisting of (1) 100% of the shares of the United Kingdom (U.K.) based entities Argenta and BioFocus, and (2) certain Dutch assets. These businesses have formed the core of the Company's Early Discovery business. With this acquisition, the Company has enhanced its position as a full service, early-stage CRO, with integrated in vitro and in vivo capabilities from target discovery through preclinical development. The preliminary purchase price of the acquisition is $191,354, including $861 in contingent consideration. The acquisition was funded by cash on hand and borrowings on the Company's revolving credit facility. The purchase price includes payment for estimated working capital, which is subject to final adjustment based on the actual working capital of the acquired business. The business will be reported in the Company's DSA segment.
	The contingent consideration is a one-time payment that could become payable based on the achievement of a revenue target for the twelve-month period following the acquisition. If achieved, the payment would become due in the second quarter of 2015. The aggregate, undiscounted amount of contingent consideration that the Company would pay is €5,000 ($6,825 as of June 28, 2014). The Company estimated the fair value of this contingent consideration based on a probability-weighted set of outcomes.
	The preliminary purchase price allocation of $183,142, net of $8,212 of cash acquired, is as follows:
	Current assets (excluding cash)	$	31,257
	Property, plant and equipment	21,008
	Other long term assets	11,549
	Definite-lived intangible assets	104,270
	Goodwill	66,330
	Current liabilities	(14,299		)
	Long term liabilities	(36,973		)
	Total purchase price allocation	$	183,142
	The breakout of definite-lived intangible assets acquired is as follows:
					Weighted average amortization life (in years)
	Client relationships	$	94,000		18
	Backlog	5,700			1
	Trademark and trade names	1,170			3
	Leasehold interests	1,000			13
	Other intangible assets	2,400			19
	Total definite-lived intangible assets	$	104,270
	The goodwill resulting from the transaction of $66,330 is primarily attributed to the potential growth in the Company's DSA businesses from customers introduced through the Early Discovery business, the assembled workforce of the acquired businesses and expected cost synergies. The goodwill attributable to Argenta and BioFocus is not deductible for tax purposes. The Company incurred transaction and integration costs in connection with the acquisition of $1,574 and $4,879 during the three and six months ended June 28, 2014, respectively, which are included in selling, general and administrative expenses.
	The following selected unaudited pro forma consolidated results of operations are presented as if the Early Discovery acquisition had occurred as of the beginning of the period immediately preceding the period of acquisition after giving effect to certain adjustments, including amortization of intangible assets and depreciation of fixed assets of $3,651 and other one-time costs. The pro forma data is for informational purposes only and does not necessarily reflect the results of operations had the companies operated as one entity during the periods reported. No effect has been given for synergies, if any, that may have been realized through the acquisition.
		Three Months Ended						Six Months Ended
		June 28, 2014				June 29, 2013		June 28, 2014		June 29, 2013
	Revenue	$	341,179			$	312,097	$	665,656	$	622,233
	Net income	35,264				23,429		65,688		47,607
	Earnings per common share
	Basic	$	0.75			$	0.5	$	1.4	$	1.01
	Diluted	$	0.74			$	0.49	$	1.38	$	1
	These pro forma results of operations have been prepared for comparative purposes only, and they do not purport to be indicative of the results of operations that actually would have resulted had the acquisition occurred on the date indicated or that may result in the future. Early Discovery revenue and operating income for the three months ended June 28, 2014 are $23,513 and $39, respectively.
	VivoPath
	In June 2014, the Company acquired substantially all of the assets of VivoPath, LLC, a discovery service company specializing in the rapid, in vivo compound evaluation of molecules in the therapeutic areas of metabolism, inflammation and oncology. The preliminary purchase price of the acquisition is $2,267, including $1,567 in contingent consideration. The aggregate, undiscounted amount of contingent consideration that could become payable is a maximum of $2,400 payable over the next three years based on the achievement of revenue growth targets. The Company estimated the fair value of this contingent consideration based on a probability-weighted set of outcomes. The business will be reported in the Company's DSA segment.

Restructuring_and_Asset_Impair

Restructuring and Asset Impairments	6 Months Ended
	Jun. 28, 2014
Restructuring and Related Activities [Abstract]	'
Restructuring and Contract Termination Costs	'
	RESTRUCTURING AND ASSET IMPAIRMENTS
	Facilities
	RMS Japan
	In the second quarter of 2014, the Company committed to a plan to consolidate certain research model operations in Japan. As a result, the Company adjusted the carrying value of certain facilities impacted by the consolidation plan. During the second quarter of 2014, the Company recorded $440 of accelerated depreciation. The Company anticipates that additional accelerated depreciation for the second half of 2014 will amount to approximately $2,640.
	RMS North America
	In the first quarter of 2014, the Company committed to a plan to close its research model production facility located in Michigan by the end of the 2014 and to reassign the sourcing of research models to other facilities in the United States (U.S.). As a result of these actions, the Company reviewed the long-lived assets of this asset group, consisting of land improvements, building and equipment, for potential impairment based on the undiscounted cash flows of the group and considered the potential redeployment and future utilization of the facility's machinery and equipment. Based on the results of this analysis, during the first quarter the Company recorded an asset impairment and other charges of $690 and accelerated depreciation of $290 reflecting the adjusted remaining useful life and estimated residual value of building and improvements. During the second quarter of 2014, the Company recorded $294 of asset impairment and other charges and $293 of accelerated depreciation. The Company anticipates that additional accelerated depreciation for 2014 will amount to approximately $503.
	RMS Europe
	In 2012, the Company commenced a consolidation of certain research model operations in Europe. As a result, the Company adjusted the carrying value of certain facilities impacted by the consolidation plan to fair value through an asset impairment charge in 2012. In the second quarter of 2014, an update to the fair value resulted in an asset impairment charge of $312. During the first quarter of 2014, the Company entered into a purchase and sale agreement to sell a facility impacted by the consolidation plan. The sale closed in the second quarter of 2014, resulting in a gain of $1,107.
	Staffing Reductions
	The Company has periodically implemented staffing reductions to improve operating efficiency and profitability at various sites. As a result of these actions, for the six months ended June 28, 2014 and June 29, 2013, the Company recorded severance and retention charges as shown below. As of June 28, 2014, $2,541 was included in accrued compensation and $1,282 in other long-term liabilities on the Company's consolidated balance sheet.
	The following table rolls forward the Company's severance and retention cost liability:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Balance, beginning of period	$	3,547		$	3,435		$	2,782		$	3,636
	Expense	2,889			285			4,789			582
	Payments/utilization	(2,613		)	(803		)	(3,748		)	(1,301		)
	Balance, end of period	$	3,823		$	2,917		$	3,823		$	2,917
	The following table presents severance and retention costs by classification on the income statement:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Severance charges included in cost of revenue	1,072			286			$	2,754		$	513
	Severance charges included in selling, general and administrative expense	1,817			(1		)	2,035			69
	Total expense	$	2,889		$	285		$	4,789		$	582
	The following table presents severance and retention cost by segment:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Research models and services	2,011			183			$	3,595		$	269
	Discovery and safety assessment	854			102			1,049			313
	Manufacturing support	24			—			24			—
	Corporate	—			—			121			—
	Total expense	$	2,889		$	285		$	4,789		$	582

Supplemental_Balance_Sheet_Inf

Supplemental Balance Sheet Information	6 Months Ended
	Jun. 28, 2014
Supplemental Balance Sheet Information [Abstract]	'
Supplemental Balance Sheet Information	'
	SUPPLEMENTAL BALANCE SHEET INFORMATION
	The composition of trade receivables, net is as follows:
		28-Jun-14			28-Dec-13
	Client receivables	$	229,187		$	190,423
	Unbilled revenue	50,185			35,184
	Total	279,372			225,607
	Less allowance for doubtful accounts	(4,868		)	(4,977		)
	Trade receivables, net	$	274,504		$	220,630
	The composition of inventories is as follows:
		June 28, 2014			December 28, 2013
	Raw materials and supplies	$	16,605		$	15,028
	Work in process	13,023			11,715
	Finished products	62,993			62,653
	Inventories	$	92,621		$	89,396
	The composition of other current assets is as follows:
		June 28, 2014			December 28, 2013
	Prepaid assets	$	34,877		$	20,058
	Deferred tax asset	30,698			29,139
	Marketable securities	11,855			11,158
	Prepaid income tax	26,824			25,247
	Restricted cash	3,455			245
	Other current assets	$	107,709		$	85,847
	The composition of property, plant and equipment, net is as follows:
		June 28, 2014			December 28, 2013
	Land	$	40,251		$	40,157
	Buildings	709,305			694,074
	Machinery and equipment	392,574			367,244
	Leasehold improvements	38,419			37,959
	Furniture and fixtures	25,139			24,013
	Vehicles	3,990			3,859
	Computer hardware and software	116,234			112,328
	Construction in progress (1)	37,123			42,075
	Total	1,363,035			1,321,709
	Less accumulated depreciation	(675,371		)	(645,527		)
	Property, plant and equipment, net	$	687,664		$	676,182
	(1) Includes the leased facility under construction. See Note 8, "Long-Term Debt and Capital Lease Obligations."
	Depreciation expense for the three months ended June 28, 2014 and June 29, 2013 was $17,449 and $15,947, respectively. Depreciation expense for the six months ended June 28, 2014 and June 29, 2013 was $33,159 and $31,708, respectively.
	The composition of other assets is as follows:
		June 28, 2014			December 28, 2013
	Deferred financing costs	$	6,259		$	7,126
	Cash surrender value of life insurance policies	27,444			26,507
	Investments in limited partnerships	21,828			17,911
	Other assets	26,284			10,420
	Other assets	$	81,815		$	61,964
	The composition of other current liabilities is as follows:
		June 28, 2014			December 28, 2013
	Accrued income taxes	$	10,471		$	18,773
	Current deferred tax liability	1,564			1,960
	Accrued interest and other	1,726			1,813
	Other current liabilities	$	13,761		$	22,546
	The composition of other long-term liabilities is as follows:
		June 28, 2014			December 28, 2013
	Deferred tax liability	$	34,429		$	14,988
	Long-term pension liability	15,593			16,219
	Accrued Executive Supplemental Life Insurance Retirement Plan and Deferred Compensation Plan	30,294			28,708
	Other long-term liabilities	22,989			10,717
	Other long-term liabilities	$	103,305		$	70,632

Marketable_Securities_and_Inve

Marketable Securities and Investments in Limited Partnerships	6 Months Ended
	Jun. 28, 2014
Marketable Securities and Equity-Method Affiliates [Abstract]	'
Marketable Securities and Equity-Method Affiliates	'
	MARKETABLE SECURITIES AND INVESTMENTS IN LIMITED PARTNERSHIPS
	Marketable Securities
	The Company's investments in marketable securities are reported at fair value and consist of time deposits with original maturities ranging from three months to one year. The carrying value for these time deposits approximates fair value and, accordingly, there are no unrealized gains or losses reflected on the consolidated balance sheet.
	Investments in Venture Capital Limited Partnerships
	The Company has invested in several venture capital limited partnerships that invest in start-up companies in the life sciences industry. The Company's total commitment to these entities as of June 28, 2014 is $55,000 of which the Company has funded $15,549 to date. During the three months and six months ended June 28, 2014, the Company received dividends in cash and in securities totaling $940 and $7,438, respectively. The Company's ownership interest in these limited partnerships ranges from 3.8% to 12.1%. These limited partnerships prepare quarterly financial statements following investment company accounting guidelines, whereby investments are adjusted to fair value with resulting gains and losses recorded in earnings. These entities estimate the fair value of non-publicly traded investments based on all available information, including value implied by the pricing of subsequent preferred share offerings and the net present value of future cash flows.
	The Company accounts for these investments under the equity-method, whereby the Company records its portion of the investment gains and losses as reported in the fund's financial statements on a quarterly lag each reporting period. In addition, the Company adjusts the carrying value of these investments to reflect its estimate of changes to fair value since the fund's financial statements based information from the fund's management team, market prices of known public holdings of the fund and other information.
	The Company's investments in these limited partnerships are subject to a high degree of volatility and are generally higher risk relative to other investments the Company may hold. The Company reports gains and losses from its limited partnership investments in other income, net. The Company recognized gains related to these investments of $2,076 and $1,395 for the three months ended June 28, 2014 and June 29, 2013, respectively. The Company recognized gains related to these investments of $8,180 and $1,305 for the six months ended June 28, 2014 and June 29, 2013, respectively. As of June 28, 2014 and December 28, 2013, these investments had a carrying value of $21,828 and $17,911, respectively, which is reported in other assets on the consolidated balance sheets.

Fair_Value

Fair Value	6 Months Ended
	Jun. 28, 2014
Fair Value Disclosures [Abstract]	'
Fair Value	'
	FAIR VALUE
	Valuation methodologies used for assets and liabilities measured or disclosed at fair value are as follows:
	•	Time deposits—Valued at their carrying amount, which approximates fair value, as reported by the financial institutions that hold the Company's securities.
	•	Investments in life insurance policies—Valued at cash surrender value based on fair value of underlying investments.
	•	Redeemable noncontrolling interest—Valued primarily using the income approach based on estimated future cash flows of the underlying business based on the Company's projected financial data discounted by a weighted average cost of capital. Significant assumptions include a discount rate of 17.5% and a long-term pretax operating margin of 32%.
	•	Contingent consideration—Valued based on a probability-weighting of the future cash flows associated with the potential outcomes.
	The fair value hierarchy level is determined by asset and liability class based on the lowest level of significant input. The observability of inputs may change for certain assets or liabilities. This condition could cause an asset or liability to be reclassified between levels. During the periods ended June 28, 2014, there were no transfers between levels.
	Assets and liabilities measured at fair value on a recurring basis are summarized below:
		Fair Value Measurements at June 28, 2014
		Quoted Prices in Active Markets for Identical Assets Level 1			Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3		Assets and Liabilities at Fair Value
	Time deposits	$	—		$	11,855	$	—	$	11,855
	Life insurance policies	—			20,351		—		20,351
	Total assets measured at fair value	$	—		$	32,206	$	—	$	32,206
	Redeemable noncontrolling interest	—			—		23,483		23,483
	Contingent consideration	—			—		2,420		2,420
	Total liabilities measured at fair value	$	—		$	—	$	25,903	$	25,903
		Fair Value Measurements at December 28, 2013
		Quoted Prices in Active Markets for Identical Assets Level 1			Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3		Assets and Liabilities at Fair Value
	Time deposits	$	—		$	11,158	$	—	$	11,158
	Life insurance policies	—			19,534		—		19,534
	Total assets measured at fair value	$	—		$	30,692	$	—	$	30,692
	Redeemable noncontrolling interest	—			—		20,581		20,581
	Total liabilities measured at fair value	$	—		$	—	$	20,581	$	20,581
	The book value of the Company's term and revolving loans, which are variable rate loans carried at amortized cost, and approximates fair value based on current market pricing of similar debt. As the fair value is based on significant other observable inputs, including current interest and foreign currency exchange rates, it is deemed to be Level 2.
	Concurrent with the acquisition of Vital River in 2013, the Company entered into a joint venture agreement with the noncontrolling interest holders that provide it with the right to purchase the remaining 25% of the entity for cash at its then appraised value beginning in January 2016. Additionally, the noncontrolling interest holders were granted the right to require the Company to purchase the remaining 25% of the entity at its then appraised value beginning in January 2016 for cash. These rights are accelerated in certain events. As the noncontrolling interest holders can require the Company to purchase for cash the remaining 25% interest, the Company classifies the carrying amount of the noncontrolling interest above the equity section and below liabilities on the consolidated balance sheet and adjust the carrying amount to fair value each quarter end. Adjustments to fair value, which is deemed to be Level 3 as the fair value is based on unobservable inputs, are recorded through additional paid-in capital.
		Fair Value Measurements
		Using Significant
		Unobservable Inputs
		(Level 3)
		Six Months Ended
	Redeemable Noncontrolling Interest (Liability)	June 28, 2014			June 29, 2013
	Beginning balance	$	20,581		$	—
	Additions	—			8,963
	Total gains or losses (realized/unrealized):
	Included in other income (expense)	372			299
	Change in balance due to foreign currency translation	(462		)	139
	Included in additional paid-in capital	2,992			2,275
	Ending balance	$	23,483		$	11,676
	As part of the Company's acquisitions of the Early Discovery businesses and VivoPath assets, it agreed to make cash payments upon the satisfaction of certain future financial measures. The carrying amount of these obligations is adjusted to fair value each quarter end. As the fair value is based on unobservable inputs, it is deemed to be Level 3.
		Fair Value Measurements
		Using Significant
		Unobservable Inputs
		(Level 3)
		Six Months Ended
	Contingent Consideration (Liability)	28-Jun-14			29-Jun-13
	Beginning balance	$	—		$	—
	Additions	2,428			—
	Total gains or losses (realized/unrealized):
	Change in balance due to foreign currency translation	(8		)	—
	Ending balance	$	2,420		$	—
	The significant unobservable inputs used in the fair value measurement of the Company's contingent consideration are the probabilities of successful achievement of certain revenue targets and a discount rate. Significant increases or decreases in any of the probabilities of success would result in a significantly higher or lower fair value measurement, respectively. Significant increases or decreases in the discount rate would result in a significantly lower or higher fair value measurement, respectively.
	The Company enters into derivative instruments to hedge foreign currency exchange risk to reduce the impact of changes to foreign currency rates on its financial statements. During the three months and the six months ended June 28, 2014, the Company recognized $(499) and $76 of net hedge (gains) losses associated with forward currency contracts, respectively. As of June 28, 2014, there were no open forward currency contracts.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 28, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	GOODWILL AND OTHER INTANGIBLE ASSETS
	The following table displays the gross carrying amount and accumulated amortization of definite-lived intangible assets by major class:
		June 28, 2014							December 28, 2013
		Gross Carrying Amount				Accumulated Amortization & Impairment Loss			Gross Carrying Amount				Accumulated Amortization & Impairment Loss
	Backlog	$	8,608			$	(4,388	)	$	2,916			$	(2,507	)
	Client relationships	411,022				(248,366		)	311,507				(238,002		)
	Trademarks and trade names	6,593				(5,125		)	5,399				(4,997		)
	Standard operating procedures	2,754				(1,792		)	2,754				(1,498		)
	Other identifiable intangible assets	14,105				(5,580		)	10,432				(4,905		)
	Total other intangible assets	$	443,082			$	(265,251	)	$	333,008			$	(251,909	)
	Additionally, as of both June 28, 2014 and December 28, 2013, other intangible assets, net, included $3,438 of indefinite-lived intangible assets.
	The changes in the gross carrying amount and accumulated impairment loss of goodwill are as follows:
							Adjustments to Goodwill
			28-Dec-13				Acquisitions			Transfers				Foreign Exchange			28-Jun-14
	Research Models and Services
	Gross carrying amount		$	83,551			$	—		$	(23,172	)		$	(419	)	$	59,960
	Discovery and Safety Assessment
	Gross carrying amount		1,152,150				66,795			(8,131		)		(93		)	1,210,721
	Accumulated impairment loss		(1,005,000		)		—			—				—			(1,005,000		)
	Manufacturing Support
	Gross carrying amount		—				—			31,303				21			31,324
	Total
	Gross carrying amount		1,235,701				66,795			—				(491		)	1,302,005
	Accumulated impairment loss		(1,005,000		)		—			—				—			(1,005,000		)
	Goodwill, net		$	230,701													$	297,005
	In the second quarter of 2014, the Company revised its reportable segments to align with the view of the business following its Early Discover acquisition. See Note 1, "Basis of Presentation." As a result of this reorganization, goodwill was allocated from the Company's prior reporting units to new reporting units, as shown in the preceding table within "transfers." The allocation was based on the fair value of each business group within its original reporting unit relative to the fair value of that reporting unit. In addition, the Company completed an assessment of any potential goodwill impairment for all reporting units immediately prior to the reallocation and determined that no impairment existed.

LongTerm_Debt_and_Capital_Leas

Long-Term Debt and Capital Lease Obligations	6 Months Ended
	Jun. 28, 2014
Debt Disclosure [Abstract]	'
Debt and Capital Leases Disclosures [Text Block]	'
	LONG-TERM DEBT AND CAPITAL LEASE OBLIGATIONS
	Long-Term Debt
	Long-term debt consists of the following:
		June 28, 2014			December 28, 2013
	Term loans	$	399,000		$	409,500
	Revolving credit facility	403,556			253,308
	Other long-term debt	240			241
	Total debt	802,796			663,049
	Less: current portion of long-term debt	(31,740		)	(21,241		)
	Long-term debt	$	771,056		$	641,808
	In 2013, the Company amended and restated its credit agreement creating a $970,000 agreement ($970M Credit Facility) that provides for a $420,000 U.S. term loan facility and a $550,000 multi-currency revolving credit facility. The revolving credit facility may be drawn in U.S. Dollars, Euros, Pound Sterling, or Japanese Yen, subject to sub-limits by currency. Under specified circumstances, the Company has the ability to expand the term loan and/or revolving credit facility by up to $350,000 in the aggregate.
	The interest rates applicable to the $970M Credit Facility are variable and are based on an applicable rate plus a spread determined by the Company's leverage ratio. As of June 28, 2014, the interest rate spread for the adjusted LIBOR was 1.125%.
	The $970M Credit Facility includes certain customary representations and warranties, events of default, notices of material adverse changes to the Company's business and negative and affirmative covenants. As of June 28, 2014, the Company was compliant with all financial covenants specified in the credit agreement.
	At June 28, 2014, the Company had $5,009 outstanding under letters of credit.
	Principal maturities of existing debt for the periods set forth in the table below, are as follows:
	Twelve Months Ending
	Jun-15	$	31,740
	Jun-16	42,000
	Jun-17	73,500
	Jun-18	655,556
	June 2019 and beyond	—
	Total	$	802,796
	Capital Lease Obligations
	The Company acquired a build-to-suit lease as part of its acquisition of Early Discovery. The Company is the deemed owner of the asset during the construction period for accounting purposes due to its involvement during the construction period. The Company capitalized $9,698 related to this construction at June 28, 2014 along with a corresponding financing obligation of the same amount. See Note 13, "Commitments and Contingencies."
	Capital lease obligations amounted to $10,753 and $740 at June 28, 2014 and December 28, 2013, respectively.

Equity

Equity	6 Months Ended
	Jun. 28, 2014
Stockholders' Equity Note [Abstract]	'
Equity	'
	EQUITY
	Earnings Per Share
	Basic earnings per share for the three and six months ended June 28, 2014 and June 29, 2013 was computed by dividing earnings available to common shareholders for these periods by the weighted average number of common shares outstanding in the respective periods adjusted for contingently issuable shares, such as unvested restricted stock. The weighted average number of common shares outstanding for the three and six months ended June 28, 2014 and June 29, 2013 has been adjusted to include common stock equivalents for the purpose of calculating diluted earnings per share for these periods.
	Options to purchase 943,484 and 2,591,555 shares were outstanding in each of the three months ended June 28, 2014 and June 29, 2013, respectively, but were not included in computing diluted earnings per share because their inclusion would have been anti-dilutive. For the six months ended June 28, 2014 and June 29, 2013, anti-dilutive options outstanding were 783,220 and 2,868,814 shares, respectively. Basic weighted average shares outstanding for the three and six months ended June 28, 2014 and June 29, 2013 excluded the weighted average impact of 1,192,859 and 1,121,561 shares, respectively, of non-vested restricted stock awards.
	The following table reconciles the numerator and denominator in the computations of the basic and diluted earnings per share.
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Numerator:
	Income from continuing operations for purposes of calculating earnings per share	$	35,908		$	28,199		$	68,410		$	53,932
	Loss from discontinued businesses	(644		)	$	(915	)	$	(914	)	$	(1,070	)
	Denominator:
	Weighted-average shares outstanding—Basic	46,941,612			48,280,371			47,016,221			47,969,683
	Effect of dilutive securities:
	Stock options and contingently issuable restricted stock	742,484			555,082			893,012			678,259
	Weighted-average shares outstanding—Diluted	47,684,096			48,835,453			47,909,233			48,647,942
	Basic earnings per share from continuing operations attributable to common shareholders	$	0.76		$	0.58		$	1.46		$	1.12
	Basic loss per share from discontinued operations attributable to common shareholders	$	(0.01	)	$	(0.02	)	$	(0.02	)	$	(0.02	)
	Diluted earnings per share from continuing operations attributable to common shareholders	$	0.75		$	0.58		$	1.43		$	1.11
	Diluted loss per share from discontinued operations attributable to common shareholders	$	(0.01	)	$	(0.02	)	$	(0.02	)	$	(0.02	)
	Treasury Shares
	In July 2010, the Company's Board of Directors authorized a $500,000 stock repurchase program.  The Board of Directors subsequently approved increases to the stock repurchase program by $250,000 in 2010, and by $250,000 in 2013 for an aggregate authorization of $1,000,000.  Additionally, the Company's 2007 Incentive Plan permits the netting of common stock upon vesting of restricted stock awards in order to satisfy individual tax withholding requirements.
	Share repurchases for the three and the six months ended June 28, 2014 and June 29, 2013 were as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Stock Repurchase Program:
	Number of shares of common stock repurchased	1,529,600			389,392			1,712,900			546,675
	Total cost of repurchase	$	80,461		$	16,580		$	90,281		$	23,038
	Netted for taxes:
	Number of shares of common stock repurchased	681			1,233			113,428			112,748
	Total cost of repurchase	$	37		$	48		$	6,691		$	4,519
	Total:
	Number of shares of common stock repurchased	1,530,281			390,625			1,826,328			659,423
	Total cost of repurchase	$	80,498		$	16,628		$	96,972		$	27,557

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 28, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	The following table provides a reconciliation of the provision for income taxes on the condensed consolidated statements of income:
		Three Months Ended					Six Months Ended
		June 28, 2014		June 29, 2013			June 28, 2014			June 29, 2013
	Income from continuing operations before income taxes	50,541		36,847			93,527			72,495
	Effective tax rate	27.9	%	22.3	%		26.1	%		24.7	%
	Provision for income taxes	14,081		8,219			24,439			17,941
	The Company's overall effective tax rate was 27.9% for the three months ended June 28, 2014 and 22.3% for the three months ended June 29, 2013. The Company's overall effective tax rate was 26.1% and 24.7% for each of the six months ended June 28, 2014 and June 29, 2013, respectively. The increases were primarily attributable to recent tax law changes, including a statutory 25% decrease in the Canadian Scientific Research and Experimental Development (SR&ED) credit, an increase in the limitation of deductibility of interest expense in France, and the movement from an enhanced deduction related to research and development costs to a research and development credit in the U.K. that is recorded in cost of services. In addition, the effective tax rate for the six months ended June 28, 2014 reflects a discrete tax cost of $1,406 related to the nondeductible transaction costs incurred in 2014 for the acquisition of the Early Discovery businesses and a discrete tax cost of $1,220 related to the write-off of deferred tax assets as a result of the reorganization of the Company's RMS U.K. entities. These increases were partially offset by an ability to offset a capital gain from an investment in a limited partnership resulting in a release of an uncertain tax position of $305 and $2,142 in the three and six months ended June 28, 2014, respectively.
	During the second quarter of 2014, the Company's unrecognized tax benefits recorded increased by $18,850 to $34,762 primarily due to pre-acquisition tax positions taken by the newly acquired Early Discovery businesses. The amount of unrecognized income tax benefits that would impact the effective tax rate increased by $18,585 to $32,878 primarily due to pre-acquisition tax positions taken by the newly acquired Early Discovery businesses. The amount of accrued interest on unrecognized tax benefits increased by $585 to $1,252 in the second quarter of 2014 primarily due to the pre-acquisition tax positions taken by the newly acquired Early Discovery businesses. The Company believes that it is reasonably possible that the Company's unrecognized tax benefits (and a corresponding indemnification asset), will decrease by up to $12,211, including $511 of interest expense, over the next twelve-month period as a result of the expiration of the statute of limitations on an issue related to the forgiveness of debt.
	In July 2013, the FASB issued ASU 2013-11 “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists.” The ASU requires an entity to present an unrecognized tax benefit as a reduction of the deferred tax asset for a net operating loss, or similar loss or tax credit carryforward, as opposed to a liability, unless certain circumstances exist. The ASU became effective during the Company's first fiscal quarter and the Company adopted the provisions of ASU 2013-11 retrospectively. The adoption of the ASU decreased net non-current deferred tax assets and decreased the associated long-term tax liabilities related to unrecognized tax benefits by $16,271 and $11,865 as of June 28, 2014 and December 28, 2013, respectively.
	The Company conducts business in a number of tax jurisdictions. As a result, it is subject to tax audits in jurisdictions including the U.S., U.K., Japan, France, Germany, and Canada. With few exceptions, the Company is no longer subject to U.S. and international income tax examinations for years before 2010 although carryforward attributes that were generated prior to 2010 may still be adjusted upon examination by taxing authorities if they either have been, or will be, used in a future period. As of June 28, 2014, the Company anticipates the statute of limitations to expire within the next twelve months for a year which includes an uncertain tax position associated with an acquisition agreement termination fee. However, the Company does not expect the liability associated with this uncertain tax position to decrease until the statute expires on the year in which a carryforward attribute is utilized.
	The Company and certain of its subsidiaries are currently under audit by various tax authorities in the U.S., Canada, Germany, and France. The Company does not believe that resolution of these controversies will have a material impact on its financial position or results of operations.
	On June 4, 2014, the Quebec government furthered a proposed tax law change on its SR&ED credit that, if passed, would provide a one-time benefit to operating income in the year of enactment and would provide a corresponding increase to the Company's effective tax rate. If passed as proposed, this tax law change would also provide for a reduction in benefit to operating income in 2015 and an additional corresponding increase to the Company's effective tax rate in 2015 and beyond.
	In accordance with the Company's policy, the remaining undistributed earnings of its non-U.S. subsidiaries remain indefinitely reinvested as of the end of the second quarter of 2014 as they are required to fund needs outside the U.S. and cannot be repatriated in a manner that is substantially tax free.
	The income tax expense (benefit) related to items of other comprehensive income are as follows:
		Three Months Ended							Six Months Ended
		June 28, 2014			June 29, 2013				June 28, 2014			June 29, 2013
	Income tax expense (benefit) related to foreign currency translation adjustment	$	—		$	(5	)		$	(105	)	$	656
	Income tax expense related to change in unrecognized pension gains, losses and prior service costs	129			301				253			544
	Income tax expense related to items of other comprehensive income	$	129		$	296			$	148		$	1,200

Employee_Benefits

Employee Benefits	6 Months Ended
	Jun. 28, 2014
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefits	'
	EMPLOYEE BENEFITS
	The following table provides the components of net periodic (benefit) cost for the Company's defined benefit plans for the three-month period ended:
		Pension Benefits						Supplemental Retirement Benefits
		June 28, 2014			June 29, 2013			June 28, 2014		June 29, 2013
	Service cost	$	843		$	823		$	190	$	161
	Interest cost	3,211			2,762			253		177
	Expected return on plan assets	(4,277		)	(3,593		)	—		—
	Amortization of prior service (credit) cost	(159		)	(147		)	165		165
	Amortization of net loss	223			682			62		63
	Net periodic (benefit) cost	$	(159	)	$	527		$	670	$	566
	The following table provides the components of net periodic (benefit) cost for the Company's defined benefit plans for the six-month period ended:
		Pension Benefits						Supplemental Retirement Benefits
		June 28, 2014			June 29, 2013			June 28, 2014		June 29, 2013
	Service cost	$	1,685		$	1,670		379		$	322
	Interest cost	6,422			5,572			505		354
	Expected return on plan assets	(8,555		)	(7,249		)	—		—
	Amortization of prior service (credit) cost	(318		)	(297		)	330		330
	Amortization of net loss	446			1,372			125		126
	Net periodic (benefit) cost	$	(320	)	$	1,068		$	1,339	$	1,132
	During 2014, the Company expects to contribute $6,477 to its pension plans.

Stock_Plans_and_StockBased_Com

Stock Plans and Stock-Based Compensation	6 Months Ended
	Jun. 28, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock Plans and Stock Based Compensation	'
	STOCK PLANS AND STOCK-BASED COMPENSATION
	The Company has stock-based compensation plans under which employees and non-employee directors may be granted stock-based awards such as stock options, restricted stock and performance share units.
	The following table provides the financial statement line items in which stock-based compensation is reflected:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Stock-based compensation expense included in:
	Cost of revenue	$	1,318		$	1,350		$	2,671		$	2,719
	Selling, general and administration	6,904			4,931			12,210			9,465
	Stock-based compensation, before income taxes	8,222			6,281			14,881			12,184
	Provision for income taxes	(2,964		)	(2,276		)	(5,328		)	(4,319		)
	Stock-based compensation, net of tax	$	5,258		$	4,005		$	9,553		$	7,865
	Performance Based Stock Award Program
	In the first quarters of 2014 and 2013, the Company issued performance share units (PSUs) to certain employees. The number of common stock issued for each PSU is adjusted based on a performance condition linked to the Company's financial performance. Certain awards are further adjusted based on a market condition, which is calculated based on the Company's stock price performance relative to a peer group over the three year vesting period. The fair value of the market condition is reflected in the fair value of the award at grant date. Each reporting period, the Company records a ratable amount of stock-based compensation for the estimated number of common shares expected to be issued upon the vesting of the PSUs based on the Company's estimated outcome for the performance condition.
	During the three months ended March 29, 2014, the Company issued 214,823 PSUs using a fair value per share of $67.82. The maximum amount of common shares to be issued upon vesting of these PSUs is 429,646. During the first quarter of 2013, the Company issued 163,847 PSUs using a fair value per share of $44.47. The maximum amount of common shares to be issued upon vesting of these PSUs is 327,694. During the three months ended June 28, 2014, the Company issued 5,800 PSUs using a fair value per share of $61.25. These 5,800 PSUs are not adjusted based on a market condition and have a maximum amount of common shares to be issued upon vesting of 5,800. For the three and six months ended June 28, 2014, the Company recognized $2,620 and $3,654, respectively, of stock-based compensation related to performance share units granted in 2014 and 2013.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 28, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	Various lawsuits, claims and proceedings of a nature considered normal to the Company's business are pending against it. In the opinion of management, the outcome of such proceedings and litigation currently pending will not materially affect the Company's consolidated financial statements.
	In early May 2013, the Company commenced an investigation into inaccurate billing with respect to certain government contracts.  The Company promptly reported these matters to the relevant government contracting officers, the Department of Health and Human Services' Office of the Inspector General, and the Department of Justice, and the Company is cooperating with these agencies to ensure the proper repayment and resolution of this matter. The Company identified approximately $1,500 in excess amounts billed on these contracts since January 1, 2007 and reserved such amount.  Because of the preliminary stage of discussions with the government and complex nature of this matter, the Company believes that it is reasonably possible that additional losses may be incurred. However, the Company cannot at this time estimate the potential range of loss beyond the current reserve of $1,500.
	In July 2012, a Mauritius supplier of large animal models submitted an Application for Arbitration with The Permanent Secretariat, The Permanent Court of Arbitration, The Mauritius Chamber of Commerce and Industry in Port Louis, Mauritius.  The supplier asserted that the Company failed to pay certain invoices and the supplier was therefore permitted to terminate the supply agreement.  The Company filed a counterclaim asserting that the supplier had failed to meet its contractual obligations under the supply agreement.  The arbitration hearing relating to this contract dispute took place in Mauritius in August 2013 and final arguments were presented in March 2014. In May 2014 and August 2014, the arbitrator issued the final rulings, ordering the Company to pay the supplier (1) the sum of $1,200 and (2) all of the supplier's arbitration costs, in each case with interest. The Company is awaiting clarification from the arbitrator as to the magnitude of the arbitration costs and the determination of the interest amounts.
	A result of the Company's April 1, 2014 Early Discovery acquisition, the Company became the obligor for an aggregate of approximately $72,700 in minimum lease payments under non-cancellable operating and capital leases payable over a period of up to 20 years.

Business_Segment_Information

Business Segment Information	6 Months Ended
	Jun. 28, 2014
Segment Reporting [Abstract]	'
Business Segment Information	'
	BUSINESS SEGMENT INFORMATION
	During the quarter ended June 28, 2014, the Company revised its reportable segments to align with its view of the business following its Early Discovery acquisition. See Note 1, "Basis of Presentation." The Company will report segment results on this basis beginning in the quarter ended June 28, 2014 and retrospectively for all comparable prior periods.
	The following table presents revenue and other financial information by business segment.
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Research Models and Services
	Revenue	$	133,120		$	129,759		$	265,615		$	264,632
	Gross margin	52,450			49,020			104,097			104,476
	Operating income	34,234			33,296			69,678			73,773
	Depreciation and amortization	7,165			7,192			14,364			14,094
	Capital expenditures	2,478			3,991			7,711			6,209
	Discovery and Safety Assessment
	Revenue	$	142,614		$	107,490		$	247,752		$	209,281
	Gross margin	39,457			25,534			65,116			48,051
	Operating income	17,798			11,261			29,511			19,704
	Depreciation and amortization	13,241			9,369			22,012			18,783
	Capital expenditures	4,340			3,064			8,051			4,856
	Manufacturing Support
	Revenue	65,445			55,684			127,180			110,258
	Gross margin	33,727			28,016			65,234			54,254
	Operating income	20,455			16,008			38,871			30,451
	Depreciation and amortization	3,894			3,849			7,975			7,543
	Capital expenditures	2,497			2,740			4,743			5,158
	A reconciliation of segment operating income to consolidated operating income is as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Total segment operating income	$	72,487		$	60,565		$	138,060		$	123,928
	Unallocated corporate overhead	(21,462		)	(17,377		)	(47,329		)	(37,977		)
	Consolidated operating income	$	51,025		$	43,188		$	90,731		$	85,951
	Revenue for each significant product or service area is as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Research models	$	87,814		$	85,959		$	174,796		$	176,216
	Research model services	45,306			43,800			90,819			88,416
	Total research models and services	133,120			129,759			265,615			264,632
	Total discovery and safety assessment	142,614			107,490			247,752			209,281
	Endotoxin and Microbial Detection	33,579			27,671			66,045			54,883
	Other manufacturing support	31,866			28,013			61,135			55,375
	Total manufacturing support	$	65,445		$	55,684		$	127,180		$	110,258
	Total revenue	$	341,179		$	292,933		$	640,547		$	584,171
	A summary of unallocated corporate overhead consists of the following:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Stock-based compensation expense	$	4,905		$	3,470		$	8,607		$	6,667
	U.S. retirement plans	809			1,042			1,453			2,342
	Audit, tax and related expense	1,226			1,089			3,131			2,324
	Salary and bonus	6,919			5,471			13,058			10,226
	Global IT	3,152			2,860			6,021			5,446
	Employee health, long-term disability and fringe benefit expense	(1,685		)	(1,656		)	634			572
	Consulting and professional services	893			1,315			2,075			2,003
	Depreciation expense	1,599			1,572			3,199			3,142
	Costs associated with evaluation and integration of acquisitions	1,371			194			4,676			680
	Other general unallocated corporate expenses	2,273			2,020			4,475			4,575
	Total unallocated corporate overhead costs	$	21,462		$	17,377		$	47,329		$	37,977
	Other general unallocated corporate expenses consist of various departmental costs including those associated with senior executives, corporate accounting, legal, tax, human resources and treasury.

Discontinued_Operations

Discontinued Operations	6 Months Ended
	Jun. 28, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	DISCONTINUED OPERATIONS
	On March 28, 2011, the Company disposed of its Phase I clinical business though the Company remained the guarantor of a facility lease that runs through January 2021 with remaining lease payments of $10,702 at June 28, 2014. The lease liability for the Company's obligation under the lease is presented net of estimated sublease income and reflected on the consolidated balance sheet as a liability of discontinued operations.
	The consolidated financial statements classify, as discontinued operations, the assets and liabilities, operating results and cash flows, of businesses that are discontinued for all periods presented. Operating results from discontinued operations are as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Loss from operations of discontinued businesses, before income taxes	$	(1,551	)	$	(1,502	)	$	(1,576	)	$	(1,722	)
	Benefit for income taxes	907			587			662			652
	Loss from operations of discontinued businesses, net of taxes	$	(644	)	$	(915	)	$	(914	)	$	(1,070	)
	Assets and liabilities of discontinued operations at June 28, 2014 and December 28, 2013 consisted of the following:
		June 28, 2014			December 28, 2013
	Current assets	$	856		$	750
	Long-term assets	3,261			3,151
	Total assets	$	4,117		$	3,901
	Current liabilities	$	2,181		$	1,931
	Long-term liabilities	8,271			8,080
	Total liabilities	$	10,452		$	10,011
	Current and long-term assets include deferred tax assets. Current and long-term liabilities consist primarily of estimated lease payments, less sublease income, for the Phase I facility.

Business_Acquisitions_Tables

Business Acquisitions (Tables)	6 Months Ended
	Jun. 28, 2014
Business Combinations [Abstract]	'
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	'
	The preliminary purchase price allocation of $183,142, net of $8,212 of cash acquired, is as follows:
	Current assets (excluding cash)	$	31,257
	Property, plant and equipment	21,008
	Other long term assets	11,549
	Definite-lived intangible assets	104,270
	Goodwill	66,330
	Current liabilities	(14,299		)
	Long term liabilities	(36,973		)
	Total purchase price allocation	$	183,142
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	'
	The breakout of definite-lived intangible assets acquired is as follows:
					Weighted average amortization life (in years)
	Client relationships	$	94,000		18
	Backlog	5,700			1
	Trademark and trade names	1,170			3
	Leasehold interests	1,000			13
	Other intangible assets	2,400			19
	Total definite-lived intangible assets	$	104,270
Business Acquisition, Pro Forma Information [Table Text Block]	'
	The pro forma data is for informational purposes only and does not necessarily reflect the results of operations had the companies operated as one entity during the periods reported. No effect has been given for synergies, if any, that may have been realized through the acquisition.
		Three Months Ended						Six Months Ended
		June 28, 2014				June 29, 2013		June 28, 2014		June 29, 2013
	Revenue	$	341,179			$	312,097	$	665,656	$	622,233
	Net income	35,264				23,429		65,688		47,607
	Earnings per common share
	Basic	$	0.75			$	0.5	$	1.4	$	1.01
	Diluted	$	0.74			$	0.49	$	1.38	$	1

Restructuring_and_Asset_Impair1

Restructuring and Asset Impairments (Tables)	6 Months Ended
	Jun. 28, 2014
Restructuring and Related Activities [Abstract]	'
Schedule of Severance and Retention Costs	'
	The following table rolls forward the Company's severance and retention cost liability:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Balance, beginning of period	$	3,547		$	3,435		$	2,782		$	3,636
	Expense	2,889			285			4,789			582
	Payments/utilization	(2,613		)	(803		)	(3,748		)	(1,301		)
	Balance, end of period	$	3,823		$	2,917		$	3,823		$	2,917
	The following table presents severance and retention costs by classification on the income statement:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Severance charges included in cost of revenue	1,072			286			$	2,754		$	513
	Severance charges included in selling, general and administrative expense	1,817			(1		)	2,035			69
	Total expense	$	2,889		$	285		$	4,789		$	582
	The following table presents severance and retention cost by segment:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Research models and services	2,011			183			$	3,595		$	269
	Discovery and safety assessment	854			102			1,049			313
	Manufacturing support	24			—			24			—
	Corporate	—			—			121			—
	Total expense	$	2,889		$	285		$	4,789		$	582

Supplemental_Balance_Sheet_Inf1

Supplemental Balance Sheet Information (Tables)	6 Months Ended
	Jun. 28, 2014
Supplemental Balance Sheet Information [Abstract]	'
Composition of Net Trade Receivables	'
	The composition of trade receivables, net is as follows:
		28-Jun-14			28-Dec-13
	Client receivables	$	229,187		$	190,423
	Unbilled revenue	50,185			35,184
	Total	279,372			225,607
	Less allowance for doubtful accounts	(4,868		)	(4,977		)
	Trade receivables, net	$	274,504		$	220,630
Composition of Inventories	'
	The composition of inventories is as follows:
		June 28, 2014			December 28, 2013
	Raw materials and supplies	$	16,605		$	15,028
	Work in process	13,023			11,715
	Finished products	62,993			62,653
	Inventories	$	92,621		$	89,396
Composition of Other Current Assets	'
	The composition of other current assets is as follows:
		June 28, 2014			December 28, 2013
	Prepaid assets	$	34,877		$	20,058
	Deferred tax asset	30,698			29,139
	Marketable securities	11,855			11,158
	Prepaid income tax	26,824			25,247
	Restricted cash	3,455			245
	Other current assets	$	107,709		$	85,847
Composition of Net Property, Plant and Equipment	'
	The composition of property, plant and equipment, net is as follows:
		June 28, 2014			December 28, 2013
	Land	$	40,251		$	40,157
	Buildings	709,305			694,074
	Machinery and equipment	392,574			367,244
	Leasehold improvements	38,419			37,959
	Furniture and fixtures	25,139			24,013
	Vehicles	3,990			3,859
	Computer hardware and software	116,234			112,328
	Construction in progress (1)	37,123			42,075
	Total	1,363,035			1,321,709
	Less accumulated depreciation	(675,371		)	(645,527		)
	Property, plant and equipment, net	$	687,664		$	676,182
	(1) Includes the leased facility under construction. See Note 8, "Long-Term Debt and Capital Lease Obligations."
Composition of Other Assets	'
	The composition of other assets is as follows:
		June 28, 2014			December 28, 2013
	Deferred financing costs	$	6,259		$	7,126
	Cash surrender value of life insurance policies	27,444			26,507
	Investments in limited partnerships	21,828			17,911
	Other assets	26,284			10,420
	Other assets	$	81,815		$	61,964
Composition of Current Liabilities	'
	The composition of other current liabilities is as follows:
		June 28, 2014			December 28, 2013
	Accrued income taxes	$	10,471		$	18,773
	Current deferred tax liability	1,564			1,960
	Accrued interest and other	1,726			1,813
	Other current liabilities	$	13,761		$	22,546
Composition of Other Long-Term Liabilities	'
	The composition of other long-term liabilities is as follows:
		June 28, 2014			December 28, 2013
	Deferred tax liability	$	34,429		$	14,988
	Long-term pension liability	15,593			16,219
	Accrued Executive Supplemental Life Insurance Retirement Plan and Deferred Compensation Plan	30,294			28,708
	Other long-term liabilities	22,989			10,717
	Other long-term liabilities	$	103,305		$	70,632

Fair_Value_Tables

Fair Value (Tables)	6 Months Ended
	Jun. 28, 2014
Fair Value Disclosures [Abstract]	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	'
		Fair Value Measurements
		Using Significant
		Unobservable Inputs
		(Level 3)
		Six Months Ended
	Redeemable Noncontrolling Interest (Liability)	June 28, 2014			June 29, 2013
	Beginning balance	$	20,581		$	—
	Additions	—			8,963
	Total gains or losses (realized/unrealized):
	Included in other income (expense)	372			299
	Change in balance due to foreign currency translation	(462		)	139
	Included in additional paid-in capital	2,992			2,275
	Ending balance	$	23,483		$	11,676
	As the fair value is based on unobservable inputs, it is deemed to be Level 3.
		Fair Value Measurements
		Using Significant
		Unobservable Inputs
		(Level 3)
		Six Months Ended
	Contingent Consideration (Liability)	28-Jun-14			29-Jun-13
	Beginning balance	$	—		$	—
	Additions	2,428			—
	Total gains or losses (realized/unrealized):
	Change in balance due to foreign currency translation	(8		)	—
	Ending balance	$	2,420		$	—
Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis	'
	Assets and liabilities measured at fair value on a recurring basis are summarized below:
		Fair Value Measurements at June 28, 2014
		Quoted Prices in Active Markets for Identical Assets Level 1			Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3		Assets and Liabilities at Fair Value
	Time deposits	$	—		$	11,855	$	—	$	11,855
	Life insurance policies	—			20,351		—		20,351
	Total assets measured at fair value	$	—		$	32,206	$	—	$	32,206
	Redeemable noncontrolling interest	—			—		23,483		23,483
	Contingent consideration	—			—		2,420		2,420
	Total liabilities measured at fair value	$	—		$	—	$	25,903	$	25,903
		Fair Value Measurements at December 28, 2013
		Quoted Prices in Active Markets for Identical Assets Level 1			Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3		Assets and Liabilities at Fair Value
	Time deposits	$	—		$	11,158	$	—	$	11,158
	Life insurance policies	—			19,534		—		19,534
	Total assets measured at fair value	$	—		$	30,692	$	—	$	30,692
	Redeemable noncontrolling interest	—			—		20,581		20,581
	Total liabilities measured at fair value	$	—		$	—	$	20,581	$	20,581

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 28, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Goodwill and Other Intangible Assets not Subject to Amortization and Other Intangible Assets that Continue to be Subject to Amortization	'
	The following table displays the gross carrying amount and accumulated amortization of definite-lived intangible assets by major class:
		June 28, 2014							December 28, 2013
		Gross Carrying Amount				Accumulated Amortization & Impairment Loss			Gross Carrying Amount				Accumulated Amortization & Impairment Loss
	Backlog	$	8,608			$	(4,388	)	$	2,916			$	(2,507	)
	Client relationships	411,022				(248,366		)	311,507				(238,002		)
	Trademarks and trade names	6,593				(5,125		)	5,399				(4,997		)
	Standard operating procedures	2,754				(1,792		)	2,754				(1,498		)
	Other identifiable intangible assets	14,105				(5,580		)	10,432				(4,905		)
	Total other intangible assets	$	443,082			$	(265,251	)	$	333,008			$	(251,909	)
Schedule of Changes in the Gross Carrying Amount and Accumulated Amortization of Goodwill	'
	The changes in the gross carrying amount and accumulated impairment loss of goodwill are as follows:
							Adjustments to Goodwill
			28-Dec-13				Acquisitions			Transfers				Foreign Exchange			28-Jun-14
	Research Models and Services
	Gross carrying amount		$	83,551			$	—		$	(23,172	)		$	(419	)	$	59,960
	Discovery and Safety Assessment
	Gross carrying amount		1,152,150				66,795			(8,131		)		(93		)	1,210,721
	Accumulated impairment loss		(1,005,000		)		—			—				—			(1,005,000		)
	Manufacturing Support
	Gross carrying amount		—				—			31,303				21			31,324
	Total
	Gross carrying amount		1,235,701				66,795			—				(491		)	1,302,005
	Accumulated impairment loss		(1,005,000		)		—			—				—			(1,005,000		)
	Goodwill, net		$	230,701													$	297,005

LongTerm_Debt_and_Capital_Leas1

Long-Term Debt and Capital Lease Obligations (Tables)	6 Months Ended
	Jun. 28, 2014
Debt Disclosure [Abstract]	'
Components of Long-Term Debt	'
	Long-term debt consists of the following:
		June 28, 2014			December 28, 2013
	Term loans	$	399,000		$	409,500
	Revolving credit facility	403,556			253,308
	Other long-term debt	240			241
	Total debt	802,796			663,049
	Less: current portion of long-term debt	(31,740		)	(21,241		)
	Long-term debt	$	771,056		$	641,808
Schedule of Principal Maturities of Existing Debt Excluding Unamortized Debt Discount	'
	Principal maturities of existing debt for the periods set forth in the table below, are as follows:
	Twelve Months Ending
	Jun-15	$	31,740
	Jun-16	42,000
	Jun-17	73,500
	Jun-18	655,556
	June 2019 and beyond	—
	Total	$	802,796

Equity_Tables

Equity (Tables)	6 Months Ended
	Jun. 28, 2014
Stockholders' Equity Note [Abstract]	'
Reconciliation of the Numerator and Denominator in the Computations of the Basic and Diluted Earnings Per Share	'
	The following table reconciles the numerator and denominator in the computations of the basic and diluted earnings per share.
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Numerator:
	Income from continuing operations for purposes of calculating earnings per share	$	35,908		$	28,199		$	68,410		$	53,932
	Loss from discontinued businesses	(644		)	$	(915	)	$	(914	)	$	(1,070	)
	Denominator:
	Weighted-average shares outstanding—Basic	46,941,612			48,280,371			47,016,221			47,969,683
	Effect of dilutive securities:
	Stock options and contingently issuable restricted stock	742,484			555,082			893,012			678,259
	Weighted-average shares outstanding—Diluted	47,684,096			48,835,453			47,909,233			48,647,942
	Basic earnings per share from continuing operations attributable to common shareholders	$	0.76		$	0.58		$	1.46		$	1.12
	Basic loss per share from discontinued operations attributable to common shareholders	$	(0.01	)	$	(0.02	)	$	(0.02	)	$	(0.02	)
	Diluted earnings per share from continuing operations attributable to common shareholders	$	0.75		$	0.58		$	1.43		$	1.11
	Diluted loss per share from discontinued operations attributable to common shareholders	$	(0.01	)	$	(0.02	)	$	(0.02	)	$	(0.02	)
Schedule of Number of Shares Repurchased and the Total Cost of Repurchase	'
	Share repurchases for the three and the six months ended June 28, 2014 and June 29, 2013 were as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Stock Repurchase Program:
	Number of shares of common stock repurchased	1,529,600			389,392			1,712,900			546,675
	Total cost of repurchase	$	80,461		$	16,580		$	90,281		$	23,038
	Netted for taxes:
	Number of shares of common stock repurchased	681			1,233			113,428			112,748
	Total cost of repurchase	$	37		$	48		$	6,691		$	4,519
	Total:
	Number of shares of common stock repurchased	1,530,281			390,625			1,826,328			659,423
	Total cost of repurchase	$	80,498		$	16,628		$	96,972		$	27,557

Income_Taxes_Tables

Income Taxes (Tables) (USD $)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 28, 2014
Income Tax Disclosures [Line Items]	'	'
Unrecognized Tax Benefits, Period Increase (Decrease)	$18,850	'
Reconciliation of Provision for Income Taxes on Condensed Consolidated Statements of Operations	'	'
		The following table provides a reconciliation of the provision for income taxes on the condensed consolidated statements of income:
			Three Months Ended					Six Months Ended
			June 28, 2014		June 29, 2013			June 28, 2014			June 29, 2013
		Income from continuing operations before income taxes	50,541		36,847			93,527			72,495
		Effective tax rate	27.9	%	22.3	%		26.1	%		24.7	%
		Provision for income taxes	14,081		8,219			24,439			17,941
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'	'
		The income tax expense (benefit) related to items of other comprehensive income are as follows:
			Three Months Ended							Six Months Ended
			June 28, 2014			June 29, 2013				June 28, 2014			June 29, 2013
		Income tax expense (benefit) related to foreign currency translation adjustment	$	—		$	(5	)		$	(105	)	$	656
		Income tax expense related to change in unrecognized pension gains, losses and prior service costs	129			301				253			544
		Income tax expense related to items of other comprehensive income	$	129		$	296			$	148		$	1,200
UNITED STATES	'	'
Income Tax Disclosures [Line Items]	'	'
Unrecognized Tax Benefits, Period Increase (Decrease)	($305)	-2,142

Employee_Benefits_Tables

Employee Benefits (Tables)	6 Months Ended
	Jun. 28, 2014
Compensation and Retirement Disclosure [Abstract]	'
Components of Net Periodic Benefit Cost for Defined Benefit Plans	'
	The following table provides the components of net periodic (benefit) cost for the Company's defined benefit plans for the six-month period ended:
		Pension Benefits						Supplemental Retirement Benefits
		June 28, 2014			June 29, 2013			June 28, 2014		June 29, 2013
	Service cost	$	1,685		$	1,670		379		$	322
	Interest cost	6,422			5,572			505		354
	Expected return on plan assets	(8,555		)	(7,249		)	—		—
	Amortization of prior service (credit) cost	(318		)	(297		)	330		330
	Amortization of net loss	446			1,372			125		126
	Net periodic (benefit) cost	$	(320	)	$	1,068		$	1,339	$	1,132
	The following table provides the components of net periodic (benefit) cost for the Company's defined benefit plans for the three-month period ended:
		Pension Benefits						Supplemental Retirement Benefits
		June 28, 2014			June 29, 2013			June 28, 2014		June 29, 2013
	Service cost	$	843		$	823		$	190	$	161
	Interest cost	3,211			2,762			253		177
	Expected return on plan assets	(4,277		)	(3,593		)	—		—
	Amortization of prior service (credit) cost	(159		)	(147		)	165		165
	Amortization of net loss	223			682			62		63
	Net periodic (benefit) cost	$	(159	)	$	527		$	670	$	566

Stock_Plans_and_StockBased_Com1

Stock Plans and Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 28, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Stock-Based Compensation Expense	'
	The following table provides the financial statement line items in which stock-based compensation is reflected:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Stock-based compensation expense included in:
	Cost of revenue	$	1,318		$	1,350		$	2,671		$	2,719
	Selling, general and administration	6,904			4,931			12,210			9,465
	Stock-based compensation, before income taxes	8,222			6,281			14,881			12,184
	Provision for income taxes	(2,964		)	(2,276		)	(5,328		)	(4,319		)
	Stock-based compensation, net of tax	$	5,258		$	4,005		$	9,553		$	7,865

Business_Segment_Information_T

Business Segment Information (Tables)	6 Months Ended
	Jun. 28, 2014
Segment Reporting [Abstract]	'
Schedule of Sales and Other Financial Information by Business Segment	'
	The following table presents revenue and other financial information by business segment.
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Research Models and Services
	Revenue	$	133,120		$	129,759		$	265,615		$	264,632
	Gross margin	52,450			49,020			104,097			104,476
	Operating income	34,234			33,296			69,678			73,773
	Depreciation and amortization	7,165			7,192			14,364			14,094
	Capital expenditures	2,478			3,991			7,711			6,209
	Discovery and Safety Assessment
	Revenue	$	142,614		$	107,490		$	247,752		$	209,281
	Gross margin	39,457			25,534			65,116			48,051
	Operating income	17,798			11,261			29,511			19,704
	Depreciation and amortization	13,241			9,369			22,012			18,783
	Capital expenditures	4,340			3,064			8,051			4,856
	Manufacturing Support
	Revenue	65,445			55,684			127,180			110,258
	Gross margin	33,727			28,016			65,234			54,254
	Operating income	20,455			16,008			38,871			30,451
	Depreciation and amortization	3,894			3,849			7,975			7,543
	Capital expenditures	2,497			2,740			4,743			5,158
Reconciliation of Segment Operating Income to Consolidated Operating Income	'
	A reconciliation of segment operating income to consolidated operating income is as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Total segment operating income	$	72,487		$	60,565		$	138,060		$	123,928
	Unallocated corporate overhead	(21,462		)	(17,377		)	(47,329		)	(37,977		)
	Consolidated operating income	$	51,025		$	43,188		$	90,731		$	85,951
Schedule of Net Sales for Each Significant Service Area	'
	for each significant product or service area is as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Research models	$	87,814		$	85,959		$	174,796		$	176,216
	Research model services	45,306			43,800			90,819			88,416
	Total research models and services	133,120			129,759			265,615			264,632
	Total discovery and safety assessment	142,614			107,490			247,752			209,281
	Endotoxin and Microbial Detection	33,579			27,671			66,045			54,883
	Other manufacturing support	31,866			28,013			61,135			55,375
	Total manufacturing support	$	65,445		$	55,684		$	127,180		$	110,258
	Total revenue	$	341,179		$	292,933		$	640,547		$	584,171
Summary of Unallocated Corporate Overhead	'
	A summary of unallocated corporate overhead consists of the following:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Stock-based compensation expense	$	4,905		$	3,470		$	8,607		$	6,667
	U.S. retirement plans	809			1,042			1,453			2,342
	Audit, tax and related expense	1,226			1,089			3,131			2,324
	Salary and bonus	6,919			5,471			13,058			10,226
	Global IT	3,152			2,860			6,021			5,446
	Employee health, long-term disability and fringe benefit expense	(1,685		)	(1,656		)	634			572
	Consulting and professional services	893			1,315			2,075			2,003
	Depreciation expense	1,599			1,572			3,199			3,142
	Costs associated with evaluation and integration of acquisitions	1,371			194			4,676			680
	Other general unallocated corporate expenses	2,273			2,020			4,475			4,575
	Total unallocated corporate overhead costs	$	21,462		$	17,377		$	47,329		$	37,977

Discontinued_Operations_Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 28, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Schedule of Operating Results from Discontinued Operations	'
	Operating results from discontinued operations are as follows:
		Three Months Ended						Six Months Ended
		June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
	Loss from operations of discontinued businesses, before income taxes	$	(1,551	)	$	(1,502	)	$	(1,576	)	$	(1,722	)
	Benefit for income taxes	907			587			662			652
	Loss from operations of discontinued businesses, net of taxes	$	(644	)	$	(915	)	$	(914	)	$	(1,070	)
Schedule of Assets and Liabilities of Discontinued Operations	'
	Assets and liabilities of discontinued operations at June 28, 2014 and December 28, 2013 consisted of the following:
		June 28, 2014			December 28, 2013
	Current assets	$	856		$	750
	Long-term assets	3,261			3,151
	Total assets	$	4,117		$	3,901
	Current liabilities	$	2,181		$	1,931
	Long-term liabilities	8,271			8,080
	Total liabilities	$	10,452		$	10,011

Business_Acquisitions_Business

Business Acquisitions Business Acquisition Details (Details)

3 Months Ended

6 Months Ended

3 Months Ended

3 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 28, 2014

Jun. 28, 2014

Jun. 29, 2013

Dec. 28, 2013

Jun. 28, 2014

Jun. 28, 2014

Apr. 01, 2014

Jun. 28, 2014

Jun. 16, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

USD ($)

USD ($)

USD ($)

USD ($)

Early Discovery UK [Member]

Early Discovery UK [Member]

Early Discovery UK [Member]

VivoPath [Member]

VivoPath [Member]

Customer Relationships [Member]

Other Intangible Assets [Member]

Above Market Leases [Member]

Trademarks and Trade Names [Member]

Order or Production Backlog [Member]

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

Early Discovery UK [Member]

Early Discovery UK [Member]

Early Discovery UK [Member]

Early Discovery UK [Member]

Early Discovery UK [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual

$23,513

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual

'39488

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets

'

'

'

'

'

'

31,257

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment

'

'

'

'

'

'

21,008

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets

'

'

'

'

'

'

11,549

'

'

'

'

'

'

'

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

'

'

'

'

'

'

'

'

'

'18 years

'19 years

'13 years

'3 years

'1 year

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

'

'

'

'

'

'

'

'

'

'94000

'2400

'1000

'1170

'5700

The breakout of definite-lived intangible assets acquired is as follows:

Weighted average amortization life (in years)

Client relationships

$

94,000

18

Backlog

5,700

1

Trademark and trade names

1,170

3

Leasehold interests

1,000

13

Other intangible assets

2,400

19

Total definite-lived intangible assets

$

104,270

Goodwill

297,005

297,005

'

230,701

'

'

66,330

'

'

'

'

'

'

'

Transaction Costs

1,574

4,879

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities

'

'

'

'

'

'

-14,299

'

'

'

'

'

'

'

Business Acquisition, Cost of Acquired Entity, Purchase Price

'

'

'

'

191,354

'

'

2,267

'

'

'

'

'

'

Business Combination, Contingent Consideration, Liability

'

'

'

'

'

'

861,000

'

1,567

'

'

'

'

'

Business Acquisition, Percentage of Voting Interests Acquired

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High

'

'

'

'

6,825,000

5,000

'

'

2,400

'

'

'

'

'

Business Combination, Consideration Transferred

'

183,151

24,218

'

183,142

'

'

'

'

'

'

'

'

'

Cash Acquired from Acquisition

'

'

'

'

8,212

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities

'

'

'

'

'

'

-36,973

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles

'

'

'

'

'

'

$104,270

'

'

'

'

'

'

'

Restructuring_and_Asset_Impair2

Restructuring and Asset Impairments (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Mar. 29, 2014

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 28, 2014

Mar. 29, 2014

Jun. 28, 2014

Dec. 27, 2014

Dec. 27, 2014

Research Models and Services [Member]

Research Models and Services [Member]

Research Models and Services [Member]

Research Models and Services [Member]

Preclinical Services [Member]

Preclinical Services [Member]

Preclinical Services [Member]

Preclinical Services [Member]

Manufacturing Support [Member]

Manufacturing Support [Member]

Manufacturing Support [Member]

Manufacturing Support [Member]

Corporate [Member]

Corporate [Member]

Corporate [Member]

Corporate [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Cost of Sales [Member]

RMS Japan [Member]

Portage, MI [Member]

Portage, MI [Member]

RMS Europe [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

RMS Japan [Member]

Restructuring Cost and Reserve [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Asset Impairment Charges

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$294

$690

$312

'

'

Gain (Loss) on Disposition of Property Plant Equipment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,107

'

'

Accelerated depreciation estimate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

440

293

290

'

503

2,640

Severance and Retention Costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, beginning of period

3,547

3,435

2,782

3,636

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expense

2,889

285

4,789

582

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments for Restructuring

-2,613

-803

-3,748

-1,301

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance, end of period

3,823

2,917

3,823

2,917

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Severance and retention costs, current

'

'

'

'

2,541

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Severance and retention costs, noncurrent

'

'

'

'

1,282

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Severance and retention costs

$2,889

$285

$4,789

$582

'

$2,011

$183

$3,595

$269

$854

$102

$1,049

$313

$24

$0

$24

$0

$0

$0

$121

$0

$1,817

($1)

$2,035

$69

$1,072

$286

$2,754

$513

'

'

'

'

'

'

Business_Acquisitions_Proforma

Business Acquisitions Proforma (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]	'	'	'	'
Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table Text Block]	'3651000	'	'	'
Business Acquisition, Pro Forma Revenue	$341,179	$312,097	$665,656	$622,233
Business Acquisition, Pro Forma Net Income (Loss)	$35,264	$23,429	$65,688	$47,607
Business Acquisition, Pro Forma Earnings Per Share, Basic	$0.75	$0.50	$1.40	$1.01
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$0.74	$0.49	$1.38	$1

Supplemental_Balance_Sheet_Inf2

Supplemental Balance Sheet Information (Details) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Composition of trade receivables	'	'
Client receivables	$229,187	$190,423
Unbilled revenue	50,185	35,184
Total	279,372	225,607
Less allowance for doubtful accounts	-4,868	-4,977
Net trade receivables	274,504	220,630
Composition of inventories	'	'
Raw materials and supplies	16,605	15,028
Work in process	13,023	11,715
Finished products	62,993	62,653
Inventories	92,621	89,396
Composition of other current assets	'	'
Prepaid assets	34,877	20,058
Deferred tax asset	30,698	29,139
Marketable securities	11,855	11,158
Prepaid income tax	26,824	25,247
Restricted cash	3,455	245
Other current assets	107,709	85,847
Composition of other assets	'	'
Deferred financing costs	6,259	7,126
Cash surrender value of life insurance policies	27,444	26,507
Equity Method Investments	21,828	17,911
Other assets	26,284	10,420
Other assets	81,815	61,964
Composition of other current liabilities	'	'
Accrued income taxes	10,471	18,773
Current deferred tax liability	1,564	1,960
Accrued intereset and other	1,726	1,813
Other current liabilities	13,761	22,546
Composition of other long-term liabilities	'	'
Deferred tax liability	34,429	14,988
Long-term pension liability	15,593	16,219
Accrued Executive Supplemental Life Insurance Retirement Plan and Deferred Compensation Plan	30,294	28,708
Other long-term liabilities	22,989	10,717
Other long-term liabilities	$103,305	$70,632

Supplemental_Balance_Sheet_Inf3

Supplemental Balance Sheet Information (Long-lived Assets) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	$1,363,035	'	$1,363,035	'	$1,321,709
Less accumulated depreciation	-675,371	'	-675,371	'	-645,527
Net property, plant and equipment	687,664	'	687,664	'	676,182
Depreciation expense	17,449	15,947	33,159	31,708	'
Land [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	40,251	'	40,251	'	40,157
Buildings [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	709,305	'	709,305	'	694,074
Machinery and Equipment [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	392,574	'	392,574	'	367,244
Leashold Improvements [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	38,419	'	38,419	'	37,959
Furniture and Fixtures [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	25,139	'	25,139	'	24,013
Vehicles [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	3,990	'	3,990	'	3,859
Computer Hardware and Software [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	116,234	'	116,234	'	112,328
Construction in Progress [Member]	'	'	'	'	'
Net property, plant and equipment	'	'	'	'	'
Gross property, plant and equipment	$37,123	'	$37,123	'	$42,075

Marketable_Securities_and_Inve1

Marketable Securities and Investments in Limited Partnerships (Investments in Limited Partnerships) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Limited partnership, committed contribution	$55,000	'	$55,000	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	15,549	'	15,549	'	'
Proceeds from Equity Method Investment, Dividends or Distributions	940	'	7,438	'	'
Income (loss) from investments in limited partnerships	2,076	1,395	8,180	1,305	'
Equity method affiliates, carrying value	$21,828	'	$21,828	'	$17,911
Ownership percentage low range [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Limited partnership, ownership (as a percentage)	3.80%	'	3.80%	'	'
Ownership percentage high range [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Limited partnership, ownership (as a percentage)	12.10%	'	12.10%	'	'

Fair_Value_Summary_of_Assets_a

Fair Value (Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (USD $)	3 Months Ended			3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013	Jan. 04, 2013	Jun. 28, 2014	Jun. 28, 2014	Jun. 28, 2014	Dec. 28, 2013	Jun. 28, 2014	Dec. 28, 2013	Jun. 28, 2014	Dec. 28, 2013
				Forward Contracts [Member]	Forward Contracts [Member]	Quoted Prices in Active Markets for Identical Assets Level 1 [Member]	Quoted Prices in Active Markets for Identical Assets Level 1 [Member]	Significant Other Observable Inputs Level 2 [Member]	Significant Other Observable Inputs Level 2 [Member]	Significant Unobservable Inputs Level 3 [Member]	Significant Unobservable Inputs Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	'	'	25.00%	'	'	'	'	'	'	'	'
Fair Value Inputs, Discount Rate	17.50%	'	'	'	'	'	'	'	'	'	'
Available-for-sale Securities, Fair Value Disclosure	$11,855	$11,158	'	'	'	$0	$0	$11,855	$11,158	$0	$0
Fair value of life policies	20,351	19,534	'	'	'	0	0	20,351	19,534	0	0
Total assets measured at fair value	32,206	30,692	'	'	'	0	0	32,206	30,692	0	0
Redeemable Noncontrolling Interest, Equity, Fair Value	23,483	20,581	'	'	'	0	0	0	0	23,483	20,581
Other Liabilities, Fair Value Disclosure	2,420	'	'	'	'	0	'	0	'	2,420	'
Total liabilities measured at fair value	25,903	20,581	'	'	'	0	0	0	0	25,903	20,581
Hedge gains recorded	'	'	'	-499	76	'	'	'	'	'	'
Outstanding forward contract, fair value	'	'	'	$0	$0	'	'	'	'	'	'
Fair Value Inputs, Long-term Pre-tax Operating Margin, Percent	32.00%	'	'	'	'	'	'	'	'	'	'

Fair_Value_Level_3_Reconciliat

Fair Value Level 3 Reconciliation Liabilities (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013	Dec. 29, 2012
Contingent Consideration [Member]	'	'	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	$2,420	$0	$0	$0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	-8	0	'	'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases	2,428	0	'	'
Non-controlling Interest	'	'	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	23,483	11,676	20,581	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	372	299	'	'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	-462	139	'	'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3	2,992	2,275	'	'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases	$0	$8,963	'	'

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets (Schedule of Goodwill and Other Intangible Assets) (Details) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Goodwill, Gross Carrying Amount	$1,302,005	$1,235,701
Other intangible assets	'	'
Other intangible assets subject to amortization, Gross Carrying Amount	443,082	333,008
Other intangible assets subject to amortization, Accumulated Amortization & Impairment Loss	-265,251	-251,909
Backlog [Member]	'	'
Other intangible assets	'	'
Other intangible assets subject to amortization, Gross Carrying Amount	8,608	2,916
Other intangible assets subject to amortization, Accumulated Amortization & Impairment Loss	-4,388	-2,507
Client Relationships [Member]	'	'
Other intangible assets	'	'
Other intangible assets subject to amortization, Gross Carrying Amount	411,022	311,507
Other intangible assets subject to amortization, Accumulated Amortization & Impairment Loss	-248,366	-238,002
Trademarks and Trade Names [Member]	'	'
Other intangible assets	'	'
Other intangible assets subject to amortization, Gross Carrying Amount	6,593	5,399
Other intangible assets subject to amortization, Accumulated Amortization & Impairment Loss	-5,125	-4,997
Standard Operating Procedures [Member]	'	'
Other intangible assets	'	'
Other intangible assets subject to amortization, Gross Carrying Amount	2,754	2,754
Other intangible assets subject to amortization, Accumulated Amortization & Impairment Loss	-1,792	-1,498
Other Intangible Assets [Member]	'	'
Other intangible assets	'	'
Other intangible assets subject to amortization, Gross Carrying Amount	14,105	10,432
Other intangible assets subject to amortization, Accumulated Amortization & Impairment Loss	-5,580	-4,905
Research Models [Member]	'	'
Other intangible assets	'	'
Other intangible assets not subject to amortization, Gross Carrying Amount	$3,438	$3,438

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets (Gross Carrying Amount and Accumulated Amortization of Goodwill) (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 28, 2014	Dec. 28, 2013
Changes in gross carrying amount and accumulated amortization of goodwill	'	'	'
Gross carrying amount, balance at the beginning of the period	$1,235,701	$1,302,005	'
Gross carrying amount, acquired during the period	66,795	'	'
Goodwill, Transfers	0	'	'
Gross carrying amount, foreign exchange/impairment	491	'	'
Accumulated impairment loss, balance at the beginning of the period	1,005,000	1,005,000	'
Goodwill	297,005	'	230,701
Research Models and Services [Member]	'	'	'
Changes in gross carrying amount and accumulated amortization of goodwill	'	'	'
Gross carrying amount, balance at the beginning of the period	83,551	59,960	'
Gross carrying amount, acquired during the period	0	'	'
Goodwill, Transfers	-23,172	'	'
Gross carrying amount, foreign exchange/impairment	419	'	'
Preclinical Services [Member]	'	'	'
Changes in gross carrying amount and accumulated amortization of goodwill	'	'	'
Gross carrying amount, balance at the beginning of the period	1,152,150	1,210,721	'
Gross carrying amount, acquired during the period	66,795	'	'
Goodwill, Transfers	-8,131	'	'
Gross carrying amount, foreign exchange/impairment	93	'	'
Accumulated impairment loss, balance at the beginning of the period	1,005,000	1,005,000	'
Manufacturing Support [Member]	'	'	'
Changes in gross carrying amount and accumulated amortization of goodwill	'	'	'
Gross carrying amount, balance at the beginning of the period	0	31,324	'
Gross carrying amount, acquired during the period	0	'	'
Goodwill, Transfers	31,303	'	'
Gross carrying amount, foreign exchange/impairment	($21)	'	'

LongTerm_Debt_and_Capital_Leas2

Long-Term Debt and Capital Lease Obligations (Long-Term Debt) (Details) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Debt Instrument	'	'
Principal	$802,796	'
Total debt	802,796	663,049
Less: current portion of long-term debt	-31,740	-21,241
Long-term debt	771,056	641,808
Term loan facilities	'	'
Debt Instrument	'	'
Total debt	399,000	409,500
Revolving credit facility	'	'
Debt Instrument	'	'
Total debt	403,556	253,308
Other long-term debt	'	'
Debt Instrument	'	'
Total debt	$240	$241

LongTerm_Debt_and_Capital_Leas3

Long-Term Debt and Capital Lease Obligations (Additional Disclosures) (Details) (USD $)	6 Months Ended
	Jun. 28, 2014	Dec. 28, 2013	Jun. 28, 2014	Apr. 01, 2014
			Early Discovery UK [Member]	Early Discovery UK [Member]
Debt Instrument [Line Items]	'	'	'	'
Capital Leases, Future Minimum Payments Due	'	'	'	$72,700,000
Construction in Progress, Gross	'	'	9,698	'
US Term Loan	420,000,000	'	'	'
Maximum borrowing capacity, Line of Credit	550,000,000	'	'	'
Credit Facility Borrowing Capacity Available Increase	350,000,000	'	'	'
Debt Instrument, Basis Spread on Variable Rate	1.13%	'	'	'
Outstanding under letters of credit	5,009,000	'	'	'
Long-term Debt, Excluding Current Maturities	771,056,000	641,808,000	'	'
Capital lease obligations	10,753,000	740,000	'	'
Principal maturities of existing debt excluding unamortized debt discount	'	'	'	'
Mar-15	31,740,000	'	'	'
Mar-16	42,000,000	'	'	'
Mar-17	73,500,000	'	'	'
Mar-18	655,556,000	'	'	'
Mar-19	0	'	'	'
Total	$802,796,000	'	'	'

Equity_Earnings_Per_Share_Deta

Equity (Earnings Per Share) (Details) (USD $)	3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Mar. 29, 2014	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Mar. 29, 2014	Mar. 30, 2013
					2.25% Senior convertible debentures	Stock options [Member]	Stock options [Member]	Stock options [Member]	Stock options [Member]	Restricted Stock [Member]	Restricted Stock [Member]
Antidilutive securities excluded from computation of earnings per share amount	'	'	'	'	'	'	'	'	'	'	'
Antidilutive securities excluded from computation of earnings per share amount (in shares)	'	'	'	'	'	943,484	2,591,555	783,220	2,868,814	1,192,859	1,121,561
Numerator:	'	'	'	'	'	'	'	'	'	'	'
Income from continuing operations for purposes of calculating earnings per share	$35,908	$28,199	$68,410	$53,932	'	'	'	'	'	'	'
Income (loss) from discontinued operations	($644)	($915)	($914)	($1,070)	'	'	'	'	'	'	'
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Weighted average shares outstanding-Basic (in shares)	46,941,612	48,280,371	47,016,221	47,969,683	'	'	'	'	'	'	'
Effect of dilutive securities:	'	'	'	'	'	'	'	'	'	'	'
Stock options and contingently issued restricted stock (in shares)	742,484	555,082	893,012	678,259	'	'	'	'	'	'	'
Weighted Average Number of Shares Outstanding, Diluted	47,684,096	48,835,453	47,909,233	48,647,942	'	'	'	'	'	'	'
Basic earnings per share from continuing operations attributable to common shareowners (in dollars per share)	$0.76	$0.58	$1.46	$1.12	'	'	'	'	'	'	'
Basic earnings (loss) per share from discontinued operations attributable to common shareowners (in dollars per share)	($0.01)	($0.02)	($0.02)	($0.02)	'	'	'	'	'	'	'
Diluted earnings per share from continuing operations attributable to common shareowners (in dollars per share)	$0.75	$0.58	$1.43	$1.11	'	'	'	'	'	'	'
Diluted earnings (loss) per share from discontinued operations attributable to common shareowners (in dollars per share)	($0.01)	($0.02)	($0.02)	($0.02)	'	'	'	'	'	'	'
Interest rate on debt (as a percent)	'	'	'	'	2.25%	'	'	'	'	'	'

Equity_Treasury_Stock_Details

Equity (Treasury Stock) (Details) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jul. 31, 2010	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013	Dec. 25, 2010
Treasury Shares	'	'	'	'	'	'	'
Stock Repurchase Program, Authorized Amount	$500,000	'	'	$1,000,000	'	'	'
Stock Repurchase Program, Authorized Amount Increase (Decrease)	'	'	'	'	'	250,000	250,000
Number of shares of common stock repurchased (in shares)	'	1,530,281	390,625	1,826,328	659,423	'	'
Total cost of repurchase of treasury shares	'	80,498	16,628	96,972	27,557	'	'
2007 Incentive Plan	'	'	'	'	'	'	'
Treasury Shares	'	'	'	'	'	'	'
Number of shares of common stock repurchased (in shares)	'	681	1,233	113,428	112,748	'	'
Total cost of repurchase of treasury shares	'	37	48	6,691	4,519	'	'
Open market repurchases [Member]	'	'	'	'	'	'	'
Treasury Shares	'	'	'	'	'	'	'
Number of shares of common stock repurchased (in shares)	'	1,529,600	389,392	1,712,900	546,675	'	'
Total cost of repurchase of treasury shares	'	$80,461	$16,580	$90,281	$23,038	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Income Tax Disclosures [Line Items]	'	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$50,541	$36,847	$93,527	$72,495	'
Income (loss) from continuing operations before income taxes	'	'	'	'	'
Income from continuing operations, before income taxes	50,541	36,847	93,527	72,495	'
Effective tax rate (as a percentage)	27.90%	22.30%	26.10%	24.70%	'
Provision (benefit) for income taxes	14,081	8,219	24,439	17,941	'
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent	'	'	25.00%	'	'
Effective Income Tax Rate Reconciliation, Deduction, Amount	'	'	1,406	'	'
Other Comprehensive Income (Loss), Tax [Abstract]	'	'	'	'	'
Income tax expense (beneffit) related to foreign currency translation adjustments	0	-5	-105	656	'
Income tax expense related to the change in unrecognized pension gains, losses and prior service costs	129	301	253	544	'
Income tax expense (benefit) related to items of other comprehensive income	129	296	148	1,200	'
Income Tax Uncertainties [Abstract]	'	'	'	'	'
Unrecognized Tax Benefits, Period Increase (Decrease)	-18,850	'	'	'	'
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	585	'	'	'	'
Interest related to unrecognized income tax benefits	1,252	'	1,252	'	'
Decrease in unrecognized tax benefits, that if recognized would impact the effective tax rate	18,585	'	'	'	'
Unrecognized Tax Benefits	34,762	'	34,762	'	'
Unrecognized tax benefits that would impact effective tax rate favorably, if recognized	32,878	'	32,878	'	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	12,211	'	12,211	'	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Interest Expense	511	'	511	'	'
Effect on Unrecognized Tax Benefits of adoption of ASU 2013-11	16,271	'	16,271	'	11,865
UNITED STATES	'	'	'	'	'
Income Tax Uncertainties [Abstract]	'	'	'	'	'
Unrecognized Tax Benefits, Period Increase (Decrease)	305	'	2,142	'	'
Deferred tax asset write-off [Domain]	'	'	'	'	'
Income (loss) from continuing operations before income taxes	'	'	'	'	'
Effective Income Tax Rate Reconciliation, Deduction, Amount	'	'	$1,220	'	'

Employee_Benefits_Details

Employee Benefits (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Pension Benefits [Member]	'	'	'	'
Employee benefits	'	'	'	'
Service cost	$843	$823	$1,685	$1,670
Interest cost	3,211	2,762	6,422	5,572
Expected return on plan assets	-4,277	-3,593	-8,555	-7,249
Amortization of prior service cost (credit)	-159	-147	-318	-297
Amortization of net loss (gain)	223	682	446	1,372
Net periodic benefit cost	-159	527	-320	1,068
Expected contributions during the current fiscal year	'	'	6,477	'
Supplemental Employee Retirement Plan, Defined Benefit [Member]	'	'	'	'
Employee benefits	'	'	'	'
Service cost	190	161	379	322
Interest cost	253	177	505	354
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit)	165	165	330	330
Amortization of net loss (gain)	62	63	125	126
Net periodic benefit cost	$670	$566	$1,339	$1,132

Stock_Plans_and_StockBased_Com2

Stock Plans and Stock-Based Compensation Stock Based Compensation Expense (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Stock-based compensation expense	'	'	'	'
Stock-based compensation expense	$8,222	$6,281	$14,881	$12,184
Provision for income taxes	-2,964	-2,276	-5,328	-4,319
Net income attributable to common shareowners	5,258	4,005	9,553	7,865
Cost of Sales [Member]	'	'	'	'
Stock-based compensation expense	'	'	'	'
Stock-based compensation expense	1,318	1,350	2,671	2,719
General and Administrative Expense [Member]	'	'	'	'
Stock-based compensation expense	'	'	'	'
Stock-based compensation expense	6,904	4,931	12,210	9,465
Performance Based Stock Award Program [Member]	'	'	'	'
Stock-based compensation expense	'	'	'	'
Stock-based compensation expense	$2,620	'	$3,654	'

Stock_Plans_and_StockBased_Com3

Stock Plans and Stock-Based Compensation Performance Based Stock Award Program (Details) (USD $)	3 Months Ended		6 Months Ended				3 Months Ended			6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Jun. 29, 2013	Mar. 29, 2014	Jun. 28, 2014	Mar. 29, 2014	Jun. 28, 2014	Jun. 28, 2014
					2013 PSU [Member]	2013 PSU [Member]	2014 PSU [Member]	2014 PSU [Member]	Performance Based Stock Award Program [Member]	Performance Based Stock Award Program [Member]
Restricted Stock and Performance Units, Additional Disclosure	'	'	'	'	'	'	'	'	'	'
Max PSU Shares	'	'	'	'	'	327,694	'	429,646,000	'	'
Granted (in dollars per share)	'	'	'	'	$44.47	'	$61,250	$67,820	'	'
Granted (in shares)	'	'	'	'	163,847,000	'	5,800,000	214,823,000	'	'
Stock-based compensation expense	$8,222	$6,281	$14,881	$12,184	'	'	'	'	$2,620	$3,654

Commitments_and_Contingencies_

Commitments and Contingencies Details (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014
Government billing [Member]	'
Other Commitments [Line Items]	'
Loss Contingency, Estimate of Possible Loss	1,500
Supplier arbitration [Member]	'
Other Commitments [Line Items]	'
Loss Contingency, Estimate of Possible Loss	1,200
Early Discovery UK [Member]	'
Other Commitments [Line Items]	'
Capital Leases, Remaining Period of Future Minimum Payments Due	'P20Y

Business_Segment_Information_D

Business Segment Information (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Business segment information	'	'	'	'
Revenue	$341,179	$292,933	$640,547	$584,171
Operating income	51,025	43,188	90,731	85,951
Depreciation and amortization	'	'	44,352	40,420
Capital expenditures	'	'	20,505	16,223
Unallocated corporate overhead	'	'	'	'
Stock-based compensation expense	8,222	6,281	14,881	12,184
Depreciation expense	17,449	15,947	33,159	31,708
Research Models [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	87,814	85,959	174,796	176,216
Research Model Services [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	45,306	43,800	90,819	88,416
Research Models and Services [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	133,120	129,759	265,615	264,632
Other Products [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	31,866	28,013	61,135	55,375
Manufacturing Support [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	65,445	55,684	127,180	110,258
Total Segments [Member]	'	'	'	'
Business segment information	'	'	'	'
Operating income	72,487	60,565	138,060	123,928
Research Models and Services [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	133,120	129,759	265,615	264,632
Gross margin	52,450	49,020	104,097	104,476
Operating income	34,234	33,296	69,678	73,773
Depreciation and amortization	7,165	7,192	14,364	14,094
Capital expenditures	2,478	3,991	7,711	6,209
Preclinical Services [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	142,614	107,490	247,752	209,281
Gross margin	39,457	25,534	65,116	48,051
Operating income	17,798	11,261	29,511	19,704
Depreciation and amortization	13,241	9,369	22,012	18,783
Capital expenditures	4,340	3,064	8,051	4,856
Manufacturing Support [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	65,445	55,684	127,180	110,258
Gross margin	33,727	28,016	65,234	54,254
Operating income	20,455	16,008	38,871	30,451
Depreciation and amortization	3,894	3,849	7,975	7,543
Capital expenditures	2,497	2,740	4,743	5,158
Unallocated Corporate Overhead [Member]	'	'	'	'
Business segment information	'	'	'	'
Operating income	-21,462	-17,377	-47,329	-37,977
Unallocated corporate overhead	'	'	'	'
Stock-based compensation expense	4,905	3,470	8,607	6,667
U.S. retirement plans	809	1,042	1,453	2,342
Audit, tax and related expenses	1,226	1,089	3,131	2,324
Salary and bonus	6,919	5,471	13,058	10,226
Global IT	3,152	2,860	6,021	5,446
Employee health, long-term disability and fringe benefit expense	-1,685	-1,656	634	572
Consulting and professional services	893	1,315	2,075	2,003
Depreciation expense	1,599	1,572	3,199	3,142
Acquisition Costs, Period Cost	1,371	194	4,676	680
Other general unallocated corporate expenses	2,273	2,020	4,475	4,575
Total unallocated corporate overhead costs	21,462	17,377	47,329	37,977
Endotoxoin and Microbial Detection [Member]	'	'	'	'
Business segment information	'	'	'	'
Revenue	$33,579	$27,671	$66,045	$54,883

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Operating results from discontinued operations	'	'	'	'	'
Income (loss) from operatoins of discontinued businesses, before income taxes	'	'	($1,576)	($1,722)	'
Provision (benefit) for income taxes	'	'	662	652	'
Income (loss) from operations of discontinued businesses, net of taxes	-644	-915	-914	-1,070	'
Assets and liabilities of discontinued operations	'	'	'	'	'
Current assets	856	'	856	'	750
Long-term assets	3,261	'	3,261	'	3,151
Current liabilities	2,181	'	2,181	'	1,931
Long-term liabilities	8,271	'	8,271	'	8,080
Phase I Clinical [Member]	'	'	'	'	'
Operating results from discontinued operations	'	'	'	'	'
Facility lease payments	'	'	10,702	'	'
Income (loss) from operatoins of discontinued businesses, before income taxes	-1,551	-1,502	'	'	'
Provision (benefit) for income taxes	907	587	'	'	'
Income (loss) from operations of discontinued businesses, net of taxes	-644	-915	'	'	'
Assets and liabilities of discontinued operations	'	'	'	'	'
Current assets	856	'	856	'	750
Long-term assets	3,261	'	3,261	'	3,151
Total assets	4,117	'	4,117	'	3,901
Current liabilities	2,181	'	2,181	'	1,931
Long-term liabilities	8,271	'	8,271	'	8,080
Total liabilities	$10,452	'	$10,452	'	$10,011