Employee Benefit Plans Summary (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Defined Contribution Pension [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 545	$ 1,439	$ 1,694	$ 4,192
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	578	781	1,700	2,344
Interest cost	2,552	2,557	7,030	7,670
Expected return on assets	(2,051)	(1,965)	(5,378)	(5,896)
Recognized net actuarial loss	242	97	508	291
Employee contributions	(46)	(129)	(139)	(386)
Net periodic benefit cost	1,275	1,341	3,721	4,023
Contributions made during period	$ 1,289	$ 3,189	$ 3,767	$ 6,145