Quarterly report pursuant to Section 13 or 15(d)

9. Pension and Retirement Benefit Plans(Tables)

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9. Pension and Retirement Benefit Plans(Tables)
 9 Months Ended
Sep. 30, 2017
Retirement Plan [Member]  
Defined contribution plan schedule
    Three Months Ended
September 30, 		    Nine Months Ended
September 30, 		 
    2017     2016     2017     2016  
                         
Interest cost   $ 98     $ 172     $ 293     $ 516  
Service cost     188       56       563       168  
Expected return on plan assets     (169 )     (199 )     (506 )     (597 )
Net periodic expense   $ 117     $ 29     $ 350     $ 87  
Postretirement Plan [Member]  
Defined contribution plan schedule
    Three Months Ended
September 30, 		    Nine Months Ended
September 30, 		 
    2017     2016     2017     2016  
                         
Interest cost   $ 21     $ 35     $ 63     $ 105  
Service cost     50       12       150       36  
Amortization of (gain) loss     33       –       99       –  
Net periodic expense   $ 104     $ 47     $ 312     $ 141