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Components of Quarterly and Year
6 Months Ended
Jun. 30, 2011
Components of Quarterly and Year [Abstract]  
Components of Quarterly and Year
10.           Components of Quarterly and Year-to-Date Net Periodic Benefit Costs

   
Six Months Ended June 30,
 
Three Months Ended June 30,
   
2011
     
2010
 
2011
     
2010
   
Qualified Pension
                           
Service cost, benefits earned during the period
 
$
518,268
   
$
532,716
   
259,134
   
$
266,358
   
Interest cost on projected benefit obligation
   
785,912
     
958,024
     
392,956
     
479,012
   
Expected return on plan assets
   
(1,171,346
)
   
(1,388,272
)
   
(585,673
)
   
(694,136
)
 
Amortization of unrecognized transition obligation
   
-
     
-
     
-
     
-
   
Amortization of unrecognized prior service cost
   
14,940
     
28,396
     
7,470
     
14,198
   
Amortization of unrecognized net loss
   
338,226
     
369,136
     
169,113
     
184,568
   
  Net periodic pension expense
 
$
486,000
   
$
500,000
   
243,000
   
$
250,000
   
                                   
Supplemental Pension
                                 
Service cost, benefits earned during the period
 
$
15,312
   
$
16,514
     
7,656
   
$
8,257
   
Interest cost on projected benefit obligation
   
26,887
     
30,424
     
13,443
     
15,212
   
Expected return on plan assets
   
-
     
-
     
-
     
-
   
Amortization of unrecognized prior service cost
   
-
     
-
     
-
     
-
   
Amortization of unrecognized net loss
   
4,732
     
3,062
     
2,366
     
1,531
   
  Net periodic supplemental pension expense
 
$
46,931
   
$
50,000
   
 $
23,465
   
$
25,000
   
                                   
Postretirement, Medical and Life
                                 
Service cost, benefits earned during the period
 
$
16,500
   
$
15,000
     
8,250
   
$
7,500
   
Interest cost on projected benefit obligation
   
37,500
     
37,500
     
18,750
     
18,750
   
Expected return on plan assets
   
-
     
-
     
-
     
-
   
Amortization of unrecognized prior service cost
   
(48,500
)
   
(47,500
)
   
(24,250
)
   
(23,750
)
 
Amortization of unrecognized net gain
   
-
     
-
     
-
     
-
   
  Net periodic postretirement, medical and life expense
 
$
5,500
   
$
5,000
   
 $
2,750
   
$
2,500
   

On April 21, 2010 the Corporation's Board of Directors approved an amendment to the Corporation's Defined Benefit Pension Plan.  Under the amendment, which became effective on July 1, 2010, new employees hired on or after the effective date will not be eligible to participate in the plan, however, existing participants at that time will continue to accrue benefits.  The Corporation anticipates that the amendment will result in a decrease in the future benefit obligations of the plan and the corresponding net periodic benefit cost associated with the plan.