XML 39 R44.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Business Acquisitions - Early Discovery Breakout of Definite-Lived Intangible Assets Acquired (Details) - Early Discovery UK - USD ($) $ in Thousands | Apr. 01, 2015 | Apr. 01, 2014
--- | --- | ---
Definite-Lived Intangible Assets |  |
Client relationships |  | $ 94,000
Backlog |  | 5,900
Trademark and trade names |  | 1,170
Leasehold interests |  | 1,000
Other intangible assets |  | 2,400
Total definite-lived intangible assets |  | $ 104,470
Client relationships |  |
Definite-Lived Intangible Assets |  |
Weighted average amortization life | 18 years |
Backlog |  |
Definite-Lived Intangible Assets |  |
Weighted average amortization life | 1 year |
Trademark and trade names |  |
Definite-Lived Intangible Assets |  |
Weighted average amortization life | 3 years |
Leasehold interests |  |
Definite-Lived Intangible Assets |  |
Weighted average amortization life | 13 years |
Other intangible assets |  |
Definite-Lived Intangible Assets |  |
Weighted average amortization life | 19 years |

X
- Definition Definite-Lived Intangible Assets [Abstract] + References No definition available. + Details
Name: | crl_DefiniteLivedIntangibleAssetsAbstract
Namespace Prefix: | crl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Finite-Lived Intangible Assets Acquired, Backlog + References No definition available. + Details
Name: | crl_FiniteLivedIntangibleAssetsAcquiredBacklog
Namespace Prefix: | crl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Finite-Lived Intangible Assets Acquired, Customer Relationships + References No definition available. + Details
Name: | crl_FiniteLivedIntangibleAssetsAcquiredCustomerRelationships
Namespace Prefix: | crl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Finite-Lived Intangible Assets Acquired, Leasehold Interests + References No definition available. + Details
Name: | crl_FiniteLivedIntangibleAssetsAcquiredLeaseholdInterests
Namespace Prefix: | crl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Finite-Lived Intangible Assets Acquired, Other Intangible Assets + References No definition available. + Details
Name: | crl_FiniteLivedIntangibleAssetsAcquiredOtherIntangibleAssets
Namespace Prefix: | crl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Finite-Lived Intangible Assets Acquired, Trademarks and Trade Names + References No definition available. + Details
Name: | crl_FiniteLivedIntangibleAssetsAcquiredTrademarksandTradeNames
Namespace Prefix: | crl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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