Pension Plans and Other Postretirement Benefits (Tables)

3 Months Ended

Dec. 24, 2016

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
	December 24,			December 26,
	2016			2015
Interest cost	$	1,041		$	1,260
Expected return on plan assets		(537	)		(854	)
Amortization of net loss (gain)		1,300			1,134
Net periodic benefit cost	$	1,804		$	1,540

	Postretirement Benefits
	Three Months Ended
	December 24,			December 26,
	2016			2015
Interest cost	$	96		$	130
Amortization of prior service credits		—			(100	)
Amortization of net loss (gain)		(97	)		(75	)
Net periodic benefit cost	$	(1	)	$	(45	)