XML 62 R48.htm IDEA: XBRL DOCUMENT
v3.10.0.1

BUSINESS ACQUISITIONS AND DIVESTITURE - Definite Lived Intangible Assets (Details) - USD ($) $ in Thousands | Apr. 03, 2018 | Aug. 04, 2017 | Sep. 28, 2016 | Jun. 27, 2016 | Apr. 04, 2016
--- | --- | --- | --- | --- | ---
MPI Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets | $ 309,200 |  |  |  |
Weighted Average Amortization Life | 12 years |  |  |  |
Brains On-Line |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  | $ 9,300 |  |  |
Weighted Average Amortization Life |  | 12 years |  |  |
Agilux |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  | $ 21,900 |  |
Weighted Average Amortization Life |  |  | 14 years |  |
Blue Stream |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  | $ 1,230 |
Weighted Average Amortization Life |  |  |  | 7 years |
WIL Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  |  | $ 164,800
Weighted Average Amortization Life |  |  |  |  | 13 years
Client relationships | MPI Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets | $ 264,900 |  |  |  |
Weighted Average Amortization Life | 13 years |  |  |  |
Client relationships | Brains On-Line |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  | $ 7,000 |  |  |
Weighted Average Amortization Life |  | 13 years |  |  |
Client relationships | Agilux |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  | $ 16,700 |  |
Weighted Average Amortization Life |  |  | 17 years |  |
Client relationships | Blue Stream |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  | $ 650 |
Weighted Average Amortization Life |  |  |  | 10 years |
Client relationships | WIL Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  |  | $ 137,500
Weighted Average Amortization Life |  |  |  |  | 15 years
Developed technology | MPI Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets | $ 23,400 |  |  |  |
Weighted Average Amortization Life | 3 years |  |  |  |
Developed technology | WIL Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  |  | $ 20,700
Weighted Average Amortization Life |  |  |  |  | 3 years
Backlog | MPI Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets | $ 20,900 |  |  |  |
Weighted Average Amortization Life | 1 year |  |  |  |
Backlog | WIL Research |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  |  | $ 6,600
Weighted Average Amortization Life |  |  |  |  | 1 year
Other intangible assets | Brains On-Line |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  | $ 2,300 |  |  |
Weighted Average Amortization Life |  | 10 years |  |  |
Other intangible assets | Agilux |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  | $ 5,200 |  |
Weighted Average Amortization Life |  |  | 4 years |  |
Other intangible assets | Blue Stream |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  | $ 580 |
Weighted Average Amortization Life |  |  |  | 5 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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 No definition available. + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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_MPIResearchMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_OrderOrProductionBacklogMember
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: |