Pension Plans and Other Postretirement Benefits (Tables)

6 Months Ended

Mar. 28, 2015

Pension Plans and Other Postretirement Benefits [Abstract]

Components of net periodic benefit costs

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

	Pension Benefits
	Three Months Ended						Six Months Ended
	March 28, 2015			March 29, 2014			March 28, 2015			March 29, 2014
Interest cost	$	1,282		$	1,443		$	2,564		$	2,887
Expected return on plan assets		(1,228	)		(1,275	)		(2,457	)		(2,551	)
Amortization of net loss (gain)		1,131			1,123			2,261			2,246
Net periodic benefit cost	$	1,185		$	1,291		$	2,368		$	2,582
	Postretirement Benefits
	Three Months Ended						Six Months Ended
	March 28, 2015			March 29, 2014			March 28, 2015			March 29, 2014
Interest cost	$	143		$	161		$	288		$	323
Amortization of prior service costs		(123	)		(122	)		(245	)		(245	)
Amortization of net loss (gain)		(49	)		(46	)		(98	)		(91	)
Net periodic benefit cost	$	(29	)	$	(7	)	$	(55	)	$	(13	)