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9. Employee Benefits (Tables)
9 Months Ended
Sep. 30, 2018
Employee Benefits  
Schedule of net periodic cost (benefit)

The table below sets forth the Plan’s net periodic benefit cost for the three-month and nine-month periods ended September 30, 2018 and 2017. 

    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2018     2017     2018     2017  
    (In thousands)     (In thousands)  
Components of net periodic cost (benefit)                        
Service cost   $     $     $     $  
Interest cost     194       214       582       642  
Expected return on assets     (291 )     (287 )     (873 )     (861 )
Amortization of transition (asset)/obligation                        
Amortization of net (gain) / loss     111       101       333       303  
Net periodic cost (benefit)   $ 14     $ 28     $ 42     $ 84