XML 143 R123.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Segment and Geographic Information Revenue by Product and Service Offering (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 26, 2015 | Sep. 26, 2015 | Jun. 27, 2015 | Mar. 28, 2015 | Dec. 27, 2014 | Sep. 27, 2014 | Jun. 28, 2014 | Mar. 29, 2014 | Dec. 26, 2015 | Dec. 27, 2014 | Dec. 28, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue | $ 353,850 | $ 349,465 | $ 339,573 | $ 320,414 | $ 329,548 | $ 327,567 | $ 341,179 | $ 299,368 | $ 1,363,302 | $ 1,297,662 | $ 1,165,528
RMS |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 473,230 | 507,327 | 511,350
DSA |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 612,173 | 538,218 | 432,378
Manufacturing |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | $ 277,899 | $ 252,117 | $ 221,800

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_SegmentReportingInformationLineItems
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: |