Stockholders' Equity - Schedule of Accumulated Other Comprehensive Earnings (Loss) and Related Tax Effects (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 27, 2014		Jun. 28, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ (40,071)	[1]	$ (56,621)
Other comprehensive earnings before reclassifications	1,425		4,044
Amounts reclassified out of other comprehensive earnings	699		(751)
Tax expense	(748)		(67)
Ending Balance	(38,695)		(53,395)
Net Unrealized Gains (Losses) Defined benefit pension and post-retirement benefit plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(40,081)		(48,623)
Other comprehensive earnings before reclassifications	0		0
Amounts reclassified out of other comprehensive earnings	1,737		2,211
Tax expense	(321)		(411)
Ending Balance	(38,665)		(46,823)
Net Unrealized Gains (Losses) Cash Flow Hedging Instruments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(691)		531
Other comprehensive earnings before reclassifications	2,177		2,046
Amounts reclassified out of other comprehensive earnings	(1,038)		(2,962)
Tax expense	(427)		344
Ending Balance	21		(41)
Cumulative Translation Adjustment and Other
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	701		(8,529)
Other comprehensive earnings before reclassifications	(752)		1,998
Amounts reclassified out of other comprehensive earnings	0		0
Tax expense	0		0
Ending Balance	$ (51)		$ (6,531)

[1] The condensed consolidated balance sheet as of September 27, 2013 was derived from audited financial statements as of that date, but does not include all disclosures required by accounting principles generally accepted in the United States of America.