Unit-Based Compensation Arrangements (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 24, 2011	Sep. 29, 2012
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Unit Plans, terms of award	Unless otherwise stipulated by the Compensation Committee of the Board of Supervisors on or before the grant date, restricted units issued under the Restricted Unit Plans vest over time with 25% of the Common Units vesting on each of the third and fourth anniversaries of the grant date and the remaining 50% of the Common Units vesting on the fifth anniversary of the grant date. The Restricted Unit Plans participants are not eligible to receive quarterly distributions with respect to or vote their respective restricted units until vested. Because each restricted unit represents a promise to issue a Common Unit at a future date, restricted units cannot be sold or transferred prior to vesting. The fair value of the restricted unit is established by the market price of the Common Unit on the date of grant, net of estimated future distributions and forfeitures during the vesting period. Restricted units are subject to forfeiture in certain circumstances as defined in the Restricted Unit Plans.
Total number of Common Units authorized for issuance	1,902,122
Aggregate grant date fair value of restricted units awarded	$ 4,706
Unrecognized compensation cost	8,877
Weighted-average recognition period of compensation cost (in years)	1.9
Compensation expense	1,240	1,203
Units [Rollforward]
Outstanding, beginning of period (in units)	442,851
Awarded (in units)	200,933
Forfeited (in units)	(525)
Issued (in units)	(89,407)
Outstanding, end of period (in units)	553,852
Weighted Average Grant Date Fair Value Per Unit [Abstract]
Outstanding, beginning of period (in dollars per unit)	$ 32.68
Awarded (in dollars per unit)	$ 23.42
Forfeited (in dollars per unit)	$ (36.06)
Issued (in dollars per unit)	$ (31.87)
Outstanding, end of period (in dollars per unit)	$ 29.45
Long-Term Incentive Plan [Member]
Long-Term Incentive Plan [Abstract]
Long-Term Incentive Plan, terms of award	The Partnership has a non-qualified, unfunded long-term incentive plan for officers and key employees (the "LTIP") which provides for payment, in the form of cash, of an award of equity-based compensation at the end of a three-year performance period.
Compensation expense	1,283	589
Liability included within accrued employment and benefit costs (or other liabilities, as applicable) related to estimated future payments under the LTIP	$ 2,771		$ 1,488