Measurement period of average distribution coverage ratio related to 2014 Long Term Incentive Plan of the Partnership.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Description of the deferred compensation arrangement, including fixed amounts and determinable awards, or the method for determining payments and awards, the timing of such payments and awards, and any requisite service or performance criteria, as of the balance sheet date.

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- Definition

General description of deferred compensation arrangements. Deferred compensation represents currently earned compensation that, under the terms of a profit-sharing, rabbi trust, pension, employee contract, or equity-based (including stock or unit option) plan, is not actually paid until a later date and is therefore not taxable until that date. May also include some split-dollar life insurance arrangements. This type of arrangement is usually made to help employees postpone paying taxes on the income and also to retain employees longer.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Description of terms of share-based payment arrangement. Includes, but is not limited to, type of award or grantee and reason for issuance.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Amount of cash paid to settle liability for award under share-based payment arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Number of additional shares authorized for issuance under share-based payment arrangement.

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No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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Description of terms of award under share-based payment arrangement.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Unit-Based Compensation Arrangements - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020	Jul. 31, 2019
Distribution Equivalent Rights Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense	$ 1,189	$ 874	$ 842
Distribution Equivalent Rights Plan, terms	On January 17, 2017, the Partnership adopted the Distribution Equivalent Rights Plan (the “DER Plan”), which gives the Compensation Committee of the Partnership’s Board of Supervisors discretion to award distribution equivalent rights (“DERs”) to executive officers of the Partnership. Once awarded, DERs entitle the grantee to a cash payment each time the Board of Supervisors declares a cash distribution on the Partnership’s Common Units, which cash payment will be equal to an amount calculated by multiplying the number of unvested restricted units which are held by the grantee on the record date of the distribution, by the amount of the declared distribution per Common Unit.
2009 Restricted Unit Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total number of Common Units authorized for issuance (in units)				2,400,000
Awards Granted	884,658	779,837	471,111
Restricted Unit Plans, terms of award	Unless otherwise stipulated by the Compensation Committee of the Partnership’s Board of Supervisors on or before the grant date, 33.33% of all outstanding awards under the Restricted Unit Plans will vest on each of the first three anniversaries of the award grant date. Participants in the Restricted Unit Plans are not eligible to receive quarterly distributions on, or vote, their respective restricted units until vested. Restricted units cannot be sold or transferred prior to vesting. The value of each restricted unit is established by the market price of the Common Unit on the date of grant, net of estimated future distributions during the vesting period. Restricted units are subject to forfeiture in certain circumstances as defined in the Restricted Unit Plans. Compensation expense for the unvested awards is recognized ratably over the vesting periods and is net of estimated forfeitures.
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 3,560
Weighted-average recognition period of compensation cost	1 year 2 months 12 days
Compensation expense	$ 11,253	$ 10,073	$ 9,242
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total number of Common Units authorized for issuance (in units)	1,800,000
Restricted Stock Units (RSUs) [Member] \| Maximum [Member] \| Vesting each of the first three anniversaries of the award grant date [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted unit awards vesting percentage	33.33%
2009 and 2018 Restricted Unit Plan [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total number of Common Units authorized for issuance (in units)		3,525,000
2018 Restricted Unit Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional number of Common Units authorized for issuance (in units)		1,725,000
Long-Term Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Long-Term Incentive Plan, terms of award	The LTIPs are non-qualified, unfunded, long-term incentive plans for executive officers and key employees that provide for payment, in the form of cash, of an award of equity-based compensation at the end of a three-year performance period.
Measurement period of average distribution coverage ratio	3 years
Long-Term Incentive Plan, compensation earned, description	The level of compensation earned under the fiscal 2021 award is evaluated using two separate measurement components: (i) 75% weight based on the level of average distributable cash flow of the Partnership over the three-year measurement period; and (ii) 25% weight based on the achievement of certain operating and strategic objectives, set by the Compensation Committee of the Board of Supervisors, over that award’s three-year measurement period. The level of compensation earned under the fiscal 2022 award, and measurement periods thereafter, is also evaluated using two separate measurement components: (i) 50% weight based on the level of average distributable cash flow of the Partnership over the three-year measurement period; and (ii) 50% weight based on the achievement of certain operating and strategic objectives, set by the Compensation Committee of the Board of Supervisors for that award’s three-year measurement period.
Compensation expense (income)	$ 6,112	$ 4,819	480
Cash payouts	$ 3,985	$ 3,354	$ 2,963