XML 17 R55.htm IDEA: XBRL DOCUMENT v3.2.0.727

Goodwill and Other Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 27, 2015 USD ($)
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	$ 321,077
Adjustments to Goodwill, Acquisitions	(437)
Adjustments to Goodwill, Foreign Exchange	(3,226)
Gross carrying amount, balance at the end of the period	317,414
Research Models and Services
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	59,196
Adjustments to Goodwill, Acquisitions	0
Adjustments to Goodwill, Foreign Exchange	(253)
Gross carrying amount, balance at the end of the period	58,943
Discovery and Safety Assessment
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	229,302
Adjustments to Goodwill, Acquisitions	(624)
Adjustments to Goodwill, Foreign Exchange	(1,533)
Gross carrying amount, balance at the end of the period	227,145
Manufacturing Support
Changes in gross carrying amount and accumulated amortization of goodwill
Gross carrying amount, balance at the beginning of the period	32,579
Adjustments to Goodwill, Acquisitions	187
Adjustments to Goodwill, Foreign Exchange	(1,440)
Gross carrying amount, balance at the end of the period	$ 31,326

X

- Definition

The increase or decrease to the recorded value of goodwill due to foreign currency translation adjustments and other increases and decreases that are not separately disclosed.

+ References

No definition available.

+ Details

Name:	crl_GoodwillGrossTranslationAndOtherAdjustments
Namespace Prefix:	crl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 50



-Paragraph 1



-Subparagraph (a)



-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 50



-Paragraph 1



-Subparagraph (a,h)



-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_GoodwillRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=crl_ResearchModelsAndServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=crl_DiscoveryandSafetyAssessmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=crl_ManufacturingSupportMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: