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EMPLOYEE BENEFIT PLANS (Tables)
 9 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
Defined benefit pension expense (income) was as follows:
 
Three Months Ended June 30,
 
Nine Months Ended June 30,
 
2019
 
2018
 
2019
 
2018
Interest cost
$
1,570

 
$
1,408

 
$
4,711

 
$
4,222

Expected return on plan assets
(2,583
)
 
(2,714
)
 
(7,749
)
 
(7,992
)
Amortization:
 

 
 

 
 

 
 

Prior service cost
4

 
3

 
11

 
11

Recognized actuarial loss
222

 
345

 
666

 
1,037

Net periodic expense (income)
$
(787
)
 
$
(958
)
 
$
(2,361
)
 
$
(2,722
)