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Pension & Postretirement Expenses
3 Months Ended
Dec. 31, 2017
Defined Benefit Plan [Abstract]  
Pension And Postretirement Plan Expenses
Total periodic pension and postretirement expense is summarized below:
 
Three Months Ended December 31,
 
 
2016
 
 
2017
Service cost
 
$
21

 
 
19

Interest cost
 
42

 
 
46

Expected return on plan assets
 
(86
)
 
 
(87
)
Net amortization
 
53

 
 
31

Total
 
$
30

 
 
9