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Pension and Postretirement Benefits
3 Months Ended
Mar. 31, 2013
Pension and Postretirement Benefits (Thousands of Dollars) [Abstract]  
Pension and Postretirement Benefits
(7) Pension and Postretirement Benefits

The components of the net periodic cost of the Company's defined benefit pension and other postretirement plans for the quarters ended March 31, 2013 and April 1, 2012 are as follows:

 
 
 
 
 
 
 
Pension
 
 
Postretirement
 
 
 
Mar. 31, 2013
 
 
April 1, 2012
 
 
Mar. 31, 2013
 
 
April 1, 2012
 
Service cost
 
$
1,502
 
 
 
1,198
 
 
 
188
 
 
 
184
 
Interest cost
 
 
4,795
 
 
 
5,494
 
 
 
345
 
 
 
440
 
Expected return on assets
 
 
(5,541
)
 
 
(5,671
)
 
 
-
 
 
 
-
 
Net amortization and deferrals
 
 
2,392
 
 
 
1,908
 
 
 
(65
)
 
 
20
 
Curtailment loss
 
 
2,959
 
 
 
-
 
 
 
-
 
 
 
-
 
Net periodic benefit cost
 
$
6,107
 
 
 
2,929
 
 
 
468
 
 
 
644
 

During the first quarter of fiscal 2013, the Company made cash contributions to its defined benefit pension plans of approximately $1,600 in the aggregate. The Company expects to contribute approximately $4,200 during the remainder of fiscal 2013.