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Pension and Other Benefit Programs
 3 Months Ended
Dec. 30, 2017
Retirement Benefits [Abstract]  
Pension and Other Benefit Programs
Pension and Other Benefit Programs
The components of net periodic benefit cost are as follows: 
 
Pension Plans
 
Postretirement Medical Plans
 
Quarter Ended
 
Quarter Ended
 
December 30, 2017
 
December 31, 2016
 
December 30, 2017
 
December 31, 2016
Service costs
$
88

 
$
91

 
$
3

 
$
3

Interest costs
123

 
112

 
15

 
14

Expected return on plan assets
(225
)
 
(219
)
 
(13
)
 
(12
)
Amortization of prior-year service costs
3

 
3

 
—

 
—

Recognized net actuarial loss
87

 
101

 
3

 
4

Net periodic benefit cost
$
76

 
$
88

 
$
8

 
$
9


During the quarter ended December 30, 2017, the Company did not make any material contributions to its pension and postretirement medical plans and currently does not expect to make any material contributions to its pension and postretirement medical plans during the remainder of fiscal 2018. However, final funding amounts for fiscal 2018 will be assessed based on our January 1, 2018 funding actuarial valuation, which will be available by the end of the fourth quarter of fiscal 2018.