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10. Employee Benefits (Tables)
6 Months Ended
Jun. 30, 2015
Employee Benefits  
Net periodic cost (benefit)

    Three Months Ended     Six Months Ended
    June 30,     June 30,
    2015     2014     2015     2014
    (In thousands)     (In thousands)  
Components of net periodic cost (benefit)                      
Service cost   $     $     $     $
Interest cost     211       220       422       440
Expected return on assets     (377 )     (432 )     (754 )     (864
Amortization of transition (asset)/obligation                      
Amortization of net (gain) / loss     87             174      
Net periodic cost (benefit)   $ (79 )   $ (212 )   $ (158 )   $ (424