XML 50 R40.htm IDEA: XBRL DOCUMENT
v3.23.3

ACQUISITIONS AND DIVESTITURES - Definite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | Jan. 27, 2023 | Apr. 05, 2022
--- | --- | ---
SAMDI |  |
Business Acquisition [Line Items] |  |
Definite-Lived Intangible Assets | $ 33,070 |
Weighted Average Amortization Life | 12 years |
Explora BioLabs |  |
Business Acquisition [Line Items] |  |
Definite-Lived Intangible Assets |  | $ 70,100
Weighted Average Amortization Life |  | 12 years
Client relationships | SAMDI |  |
Business Acquisition [Line Items] |  |
Definite-Lived Intangible Assets | $ 23,400 |
Weighted Average Amortization Life | 15 years |
Client relationships | Explora BioLabs |  |
Business Acquisition [Line Items] |  |
Definite-Lived Intangible Assets |  | $ 64,000
Weighted Average Amortization Life |  | 13 years
Other intangible assets | SAMDI |  |
Business Acquisition [Line Items] |  |
Definite-Lived Intangible Assets | $ 9,670 |
Weighted Average Amortization Life | 7 years |
Other intangible assets | Explora BioLabs |  |
Business Acquisition [Line Items] |  |
Definite-Lived Intangible Assets |  | $ 6,100
Weighted Average Amortization Life |  | 4 years

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-5 + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
Name: | us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=crl_SAMDITechIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=crl_ExploraBioLabsHoldingsIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_OtherIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |