Pension, Postretirement, and Postemployement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 25, 2016	Dec. 27, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension Contributions	$ 0	$ 744
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	21	49
Defined Benefit Plan, Interest Cost	1,349	1,515
Defined Benefit Plan, Expected Return on Plan Assets	(1,969)	(2,174)
Defined Benefit Plan, Amortization of Net Gains (Losses)	736	599
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	34	34
Defined Benefit Plan, Net Periodic Benefit Cost	103	(45)
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	3	16
Defined Benefit Plan, Interest Cost	122	156
Defined Benefit Plan, Expected Return on Plan Assets	(264)	(331)
Defined Benefit Plan, Amortization of Net Gains (Losses)	(237)	(273)
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	365	365
Defined Benefit Plan, Net Periodic Benefit Cost	$ (741)	$ (797)