XML 67 R79.htm IDEA: XBRL DOCUMENT v2.4.0.8
Benefit Plans - Components of Net Periodic Postretirement Benefit Cost (Detail) (Postretirement Benefits [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Sep. 29, 2013
Sep. 30, 2012
Postretirement Benefits [Member]
       
Pension Plans, Postretirement and Other Employee Benefits [Line Items]        
Service cost $ 412 $ 316 $ 1,238 $ 948
Interest cost 715 781 2,145 2,344
Recognized net actuarial loss 700 613 2,100 1,838
Amortization of prior service cost (377) (379) (1,133) (1,137)
Net periodic postretirement benefit cost $ 1,450 $ 1,331 $ 4,350 $ 3,993