Rendering

Component: (Network and Table)
Network
2415408 - Disclosure - EMPLOYEE BENEFIT PLANS - Components of Net Period Benefit Cost (Details)
(http://www.crl.com/role/EmployeeBenefitPlansComponentsOfNetPeriodBenefitCostDetails)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001100682 (http://www.sec.gov/CIK)
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]Pension Plans
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2015-12-27 - 2016-12-31
2014-12-28 - 2015-12-26
2013-12-29 - 2014-12-27
Service cost
2,453,000  
4,293,000  
4,155,000  
Interest cost
12,046,000  
12,974,000  
13,831,000  
Expected return on plan assets
(14,164,000) 
(16,987,000) 
(17,444,000) 
Amortization of prior service cost (credit)
(292,000) 
(581,000) 
1,211,000  
Amortization of net loss (gain)
2,003,000  
3,198,000  
23,000  
Curtailment
(279,000) 
0  
0  
Settlements
788,000  
0  
0  
Net periodic cost (benefit)
2,555,000  
 
2,897,000  
 
1,776,000