Pension Plans and Other Postretirement Benefits (Tables)

9 Months Ended

Jun. 24, 2017

Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]

Components of Net Periodic Benefit Costs

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

	Pension Benefits
	Three Months Ended						Nine Months Ended
	June 24,			June 25,			June 24,			June 25,
	2017			2016			2017			2016
Interest cost	$	1,041		$	1,260		$	3,123		$	3,781
Expected return on plan assets		(537	)		(854	)		(1,611	)		(2,563	)
Amortization of net loss (gain)		1,301			1,304			3,901			3,913
Net periodic benefit cost	$	1,805		$	1,710		$	5,413		$	5,131

	Postretirement Benefits
	Three Months Ended						Nine Months Ended
	June 24,			June 25,			June 24,			June 25,
	2017			2016			2017			2016
Interest cost	$	96		$	130		$	288		$	400
Amortization of prior service credits		—			(100	)		—			(300	)
Amortization of net loss (gain)		(98	)		(74	)		(292	)		(223	)
Net periodic benefit cost	$	(2	)	$	(44	)	$	(4	)	$	(123	)