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EMPLOYEE BENEFIT PLANS
 9 Months Ended
Jun. 30, 2018
Retirement Benefits [Abstract]  
EMPLOYEE BENEFIT PLANS

Defined benefit pension expense (income) was as follows:
 
Three Months Ended June 30,
 
Nine Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
Interest cost
$
1,407

 
$
1,402

 
$
4,221

 
$
4,206

Expected return on plan assets
(2,684
)
 
(2,735
)
 
(8,052
)
 
(8,207
)
Amortization:
 

 
 

 
 

 
 

Prior service cost
4

 
4

 
12

 
12

Recognized actuarial loss
525

 
832

 
1,575

 
2,496

Net periodic expense (income)
$
(748
)
 
$
(497
)
 
$
(2,244
)
 
$
(1,493
)


As a result of the recent passing of our Chairman of the Board, who participated in a Supplemental Executive Retirement Plan relating to his tenure as Chief Executive Officer (a position from which he retired in 2008), the pension benefit liability was reduced by $13,715 at December 31, 2017, with the offset, net of tax, recorded in Other Comprehensive Income.