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Pensions
6 Months Ended
Jun. 30, 2011
Compensation and Retirement Disclosure [Abstract]  
Pensions
Components of Net Periodic Pension Cost
     
 
Three Months Ended
June 30
 
Six Months Ended
June 30
 
2011
 
2010
 
2011
 
2010
               
Service cost
$   233
 
$   180
 
$   465
 
$   388
Interest cost
347
 
327
 
695
 
668
Expected return on plan assets
(334)
 
(289)
 
(667)
 
(583)
Plan amendments
23
 
-
 
46
 
-
Amortization of actuarial loss
78
 
40
 
156
 
106
Amortization of prior service cost
5
 
5
 
9
 
9
Rate-regulated adjustment
46
 
42
 
92
 
21
Net periodic pension expense
$   398
 
$   305
 
$   796
 
$   609


Employer Contributions

The Company previously disclosed in its financial statements for the year ended December 31, 2010 that it expected to contribute $1,593 to its pension plans in 2011.  As of June 30, 2011, a contribution of $264 had been made.  The Company expects to contribute the remaining $1,329 over the final two quarters of 2011.