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Defined Benefit Pension Plans
6 Months Ended
Jun. 30, 2011
Defined Benefit Pension Plans [Abstract]  
Defined Benefit Pension Plans
(11) Defined Benefit Pension Plans
The Corporation offers a tax-qualified defined benefit pension plan for the benefit of certain eligible employees. Effective October 1, 2007, the pension plan was amended to freeze plan entry to new hires and rehires.  Existing employees hired prior to October 1, 2007 continue to accrue benefits under the plan.  The Corporation also has non-qualified retirement plans to provide supplemental retirement benefits to certain employees, as defined in the plans.  The supplemental retirement plans provide eligible participants with an additional retirement benefit.

For the periods indicated, the composition of net periodic benefit cost was as follows:

(Dollars in thousands)
 
Qualified
  
Non-Qualified
 
   
Pension Plan
  
Retirement Plans
 
   
Three Months
  
Six Months
  
Three Months
  
Six Months
 
Periods ended June 30,
 
2011
  
2010
  
2011
  
2010
  
2011
  
2010
  
2011
  
2010
 
Service cost
 $578  $585  $1,157  $1,169  $18  $23  $36  $46 
Interest cost
  644   626   1,289   1,253   124   129   248   258 
Expected return on plan assets
  (698)  (630)  (1,397)  (1,260)     -   -   - 
Amortization of prior service cost
  (9)  (9)  (17)  (17)     2   -   4 
Recognized net actuarial loss
  99   80   196   160   3   5   6   10 
Net periodic benefit cost
 $614  $652  $1,228  $1,305  $145  $159  $290  $318 
 
Employer Contributions:
The Corporation previously disclosed in its financial statements for the year ended December 31, 2010 that it expected to contribute $3.0 million to its qualified pension plan and make $723 thousand in benefit payments under its non-qualified retirement plans in 2011.  The Corporation contributed $3.0 million to the qualified pension plan on April 1, 2011.  During the six months ended June 30, 2011, $341 thousand in benefit payments have been made under the non-qualified retirement plans and it presently anticipates making an additional $382 thousand in benefit payments throughout the remainder of 2011.