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Note 7. Employee Benefit Plans
3 Months Ended
Mar. 31, 2012
Pension and Other Postretirement Benefits Disclosure [Text Block]
Note 7.   Employee Benefit Plans

We sponsor defined benefit pension plans covering substantially all U.S. employees.  Net periodic pension cost for the plans consisted of the following for the three months ended March 31, 2012 and 2011 (in thousands):

   
Three Months Ended
March 31,
   
Pension Benefits
 
Other Benefits
   
2012
 
2011
 
2012
 
2011
Service cost
 
$
993
   
$
969
   
$
17
   
$
14
 
Interest cost
 
1,017
   
1,028
   
19
   
19
 
Expected return on plan assets
 
(1,145
)
 
(1,370
)
 
   
 
Amortization of prior service cost
 
100
   
101
   
11
   
11
 
Amortization of net (gain) loss
 
707
   
220
   
(7
)
 
(11
)
Net periodic benefit cost
 
$
1,672
   
$
948
   
$
40
   
$
33
 

The increased service costs in 2012 versus 2011 were driven primarily by higher staffing and compensation levels.

We expect to contribute $2.0 million to the pension plans during 2012.  As of March 31, 2012, the company has made no contributions.