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EMPLOYEE BENEFIT PLANS (Tables)
3 Months Ended
Dec. 31, 2019
Retirement Benefits [Abstract]  
Summary of Defined Benefit Plans Included in Other Income

Defined benefit pension expense (income) included in Other Income (Expense), net was as follows:
 
Three Months Ended December 31,
 
 
2019
 
2018
 
Interest cost
$
1,151

 
$
1,570

 
Expected return on plan assets
(2,586
)
 
(2,583
)
 
Amortization:
 

 
 

 
Prior service cost
4

 
4

 
Recognized actuarial loss
1,042

 
222

 
Net periodic expense (income)
$
(389
)
 
$
(787
)