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9. Employee Benefits (Tables)
9 Months Ended
Sep. 30, 2015
Employee Benefits  
Net periodic cost (benefit)

   Three Months Ended   Nine Months Ended 
   September 30,   September 30, 
   2015   2014   2015   2014 
   (In thousands)   (In thousands) 
Components of net periodic cost (benefit)                
Service cost  $   $   $   $ 
Interest cost  211    220   633    660 
Expected return on assets  (377)   (432)  (1,131)   (1,296)
Amortization of transition (asset)/obligation              
Amortization of net (gain) / loss  87       261     
Net periodic cost (benefit)  $(79)  $(212)  $(237)  $(636)