Pension Plans and Other Postretirement Benefits (Tables)

3 Months Ended

Dec. 26, 2020

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Costs

The following table provides the components of net periodic benefit costs:

	Pension Benefits
	Three Months Ended
	December 26,			December 28,
	2020			2019
Interest cost	$	534		$	720
Expected return on plan assets		(319	)		(320	)
Amortization of net loss		898			862
Net periodic benefit cost	$	1,113		$	1,262

	Postretirement Benefits
	Three Months Ended
	December 26,			December 28,
	2020			2019
Interest cost	$	19		$	37
Amortization of prior service credits		(124	)		(124	)
Amortization of net (gain)		(181	)		(197	)
Net periodic benefit cost	$	(286	)	$	(284	)