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10. Employee Benefits (Tables)
3 Months Ended
Mar. 31, 2015
Employee Benefits  
Net periodic cost (benefit)
    Three Months Ended  
    March 31,  
    2015     2014  
    (In thousands)  
Components of net periodic cost (benefit)                
Service cost   $     $  
Interest cost     211       220  
Expected return on assets     (377 )     (432 )
Amortization of transition (asset)/obligation            
Amortization of net (gain) / loss     87        
Net periodic cost (benefit)   $ (79 )   $ (212 )