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Pension & Postretirement Expenses
 6 Months Ended
Mar. 31, 2019
Defined Benefit Plan [Abstract]  
Pension And Postretirement Plan Expenses
PENSION & POSTRETIREMENT PLANS

Total periodic pension and postretirement (income) expense is summarized below:
 
Three Months Ended March 31,
 
Six Months Ended March 31,
 
 
2018
 
 
2019
 
 
2018

 
 
2019
Service cost
 
$
19

 
 
18

 
 
38

 
 
36

Interest cost
 
47

 
 
50

 
 
93

 
 
100

Expected return on plan assets
 
(88
)
 
 
(88
)
 
 
(175
)
 
 
(176
)
Net amortization
 
30

 
 
16

 
 
61

 
 
33

Total
 
$
8

 
 
(4
)
 
 
17

 
 
(7
)