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PENSION AND OTHER POSTRETIREMENT BENEFITS (Schedule of Net Defined Benefit Pension and Other Postretirement Costs) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Sep. 28, 2014
Sep. 29, 2013
Pension Benefits [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0 $ (20) $ 0 $ 0
Interest cost 2,026 1,988 6,078 5,965
Estimated return on plan assets (1,593) (1,349) (4,780) (4,048)
Amortization of net loss (gain) 14 250 42 751
Net costs 447 869 1,340 2,668
Other Benefits [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0 0 0 0
Interest cost 20 20 60 59
Estimated return on plan assets 0 0 0 0
Amortization of net loss (gain) 0 0 0 0
Net costs $ 20 $ 20 $ 60 $ 59