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RETIREMENT PLAN (Tables)
3 Months Ended
Mar. 31, 2013
RETIREMENT PLAN [Abstract]  
Net periodic defined benefit pension expense
The following table presents information concerning net periodic defined benefit pension expense for the three months ended March 31, 2013 and 2012 (in thousands):

 
Three Months Ended
 
 
 
March 31, 2013
 
 
March 31, 2012
 
Service cost
 
$
-
 
 
$
603
 
Interest cost
 
 
498
 
 
 
555
 
Expected return on plan assets
 
 
(575
)
 
 
(527
)
Net amortization
 
 
61
 
 
 
160
 
Net periodic benefit (income) expense
 
$
(16
)
 
$
791