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PENSION AND POST RETIREMENT BENEFIT PLAN (Tables)
6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Components of Net Pension Benefit Loss/(Gain)

Components of Net Pension Benefit Loss/(Gain) 

 

   Three Months Ended   Six Months Ended 
   June 30,   June 30, 
(in thousands)  2019   2018   2018   2017 
Interest and service cost  $1,762   $1,995   $3,524   $3,990 
Expected return on plan assets   (2,640)   (3,443)   (5,280)   (6,886)
Amortization of net loss   878    826    1,756    1,652 
Net periodic loss/(benefit)  $   $(622)  $   $(1,244)