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EMPLOYEE BENEFIT PLAN (Tables)
3 Months Ended
Mar. 31, 2015
EMPLOYEE BENEFIT PLAN  
Schedule of net periodic benefit cost and related components
   
Three months ended
March 31
 
(in thousands)
 
2015
   
2014
 
Interest cost
  $ 474     $ 486  
Expected return on plan assets
    (565 )     (560 )
Amortization of net losses
    198       133  
Net periodic benefit cost
  $ 107     $ 59  
Schedule of trading gains (losses) related to SERP assets
   
Three months ended
March 31
 
(in thousands)
 
2015
   
2014
 
Gains (losses), net
  $ 204     $ 184