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DEFINED BENEFIT PENSION EXPENSE
3 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
DEFINED BENEFIT PENSION EXPENSE
DEFINED BENEFIT PENSION EXPENSE

Defined benefit pension expense (income) was as follows:
 
Three Months Ended December 31,
 
 
2016
 
2015
 
Interest cost
$
1,402

 
$
2,080

 
Expected return on plan assets
(2,736
)
 
(2,916
)
 
Amortization:
 

 
 

 
Prior service cost
4

 
4

 
Recognized actuarial loss
832

 
590

 
Net periodic expense (income)
$
(498
)
 
$
(242
)
 


In 2016, the Company changed the method used to estimate the service and interest components of net periodic benefit cost for pension and other post-retirement benefits from the single weighted-average discount rate to the spot rate method.  There was no impact on the total benefit obligation.