Pension Plans and Other Postretirement Benefits (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 24, 2011
Pension Benefits [Member]
Net periodic benefit cost [Abstract]
Service Cost	$ 0	$ 0
Interest cost	1,307	1,578
Expected return on plan assets	(1,320)	(1,416)
Amortization of prior service costs	0	0
Recognized net actuarial loss	1,321	1,318
Net periodic benefit cost	1,308	1,480
Projected annual contribution requirements related to the Partnership's postretirement health care and life insurance benefit plan for fiscal year	0
Postretirement Benefits [Member]
Net periodic benefit cost [Abstract]
Service Cost	2	2
Interest cost	146	200
Expected return on plan assets	0	0
Amortization of prior service costs	(122)	(122)
Recognized net actuarial loss	0	0
Net periodic benefit cost	26	80
Projected annual contribution requirements related to the Partnership's postretirement health care and life insurance benefit plan for fiscal year	1,427
Employer contribution for postretirement health care and life insurance	$ 289