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Retirement Plans (Tables)
9 Months Ended
Sep. 29, 2012
Retirement Plans [Abstract]  
Pension and Other Post Retirement Benefit Plans [Table Text Block]
The components of the net periodic expense for the Company’s pension plans and other postretirement benefit plans are as follows (in thousands):
 
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 29, 2012
 
October 1, 2011
 
September 29, 2012
 
October 1, 2011
Service cost
 
$
415

 
$
440

 
$
1,449

 
$
1,097

Interest cost
 
3,642

 
3,722

 
10,908

 
11,265

Expected return on plan assets
 
(4,141
)
 
(4,094
)
 
(12,657
)
 
(12,275
)
Net amortization and deferral
 
(1
)
 
(2
)
 
(3
)
 
(4
)
Recognized net actuarial loss
 
1,562

 
190

 
4,818

 
822

Net periodic expense
 
$
1,477

 
$
256

 
$
4,515

 
$
905