Pension, Postretirement, and Postemployement Obligations (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 29, 2015	Mar. 30, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year			$ 3,365,000
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	226,000	39,000	452,000	78,000
Defined Benefit Plan, Interest Cost	1,859,000	1,999,000	3,718,000	3,998,000
Defined Benefit Plan, Expected Return on Plan Assets	2,466,000	2,483,000	(4,932,000)	(4,966,000)
Defined Benefit Plan, Amortization of Net Gains (Losses)	420,000	106,000	840,000	212,000
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	34,000	34,000	(68,000)	(68,000)
Defined Benefit Plan, Net Periodic Benefit Cost	5,000	(373,000)	10,000	(746,000)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year			0
Defined Benefit Plan, Service Cost	39,000	149,000	78,000	298,000
Defined Benefit Plan, Interest Cost	211,000	228,000	422,000	456,000
Defined Benefit Plan, Expected Return on Plan Assets	(361,000)	(371,000)	(722,000)	(742,000)
Defined Benefit Plan, Amortization of Net Gains (Losses)	(347,000)	(455,000)	(694,000)	(910,000)
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	(365,000)	(365,000)	(730,000)	(730,000)
Defined Benefit Plan, Net Periodic Benefit Cost	$ (823,000)	$ (814,000)	$ (1,646,000)	$ (1,628,000)