Financial Instruments and Risk Management (Tables)

12 Months Ended

Sep. 27, 2025

Fair Value Disclosures [Abstract]

Fair value of the Partnership's derivative instruments and their location in the condensed consolidated balance sheets

The following summarizes the fair value of the Partnership’s derivative instruments and their location in the consolidated balance sheets as of September 27, 2025 and September 28, 2024, respectively:

	As of September 27, 2025			As of September 28, 2024
Asset Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging    instruments:
Commodity-related derivatives	Other current assets	$	1,504	Other current assets	$	4,122
	Other assets		102	Other assets		769
		$	1,606		$	4,891
Liability Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging    instruments:
Commodity-related derivatives	Other current liabilities	$	1,883	Other current liabilities	$	5,744
	Other liabilities		53	Other liabilities		—
		$	1,936		$	5,744

Reconciliation of the beginning and ending balances of assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs

The following summarizes the reconciliation of the beginning and ending balances of assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs:

	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
	Fiscal 2025						Fiscal 2024
	Assets			Liabilities			Assets		Liabilities
Beginning balance of over-the-counter options	$	1,475		$	193		$	—	$	806
Beginning balance realized during the period		(1,475	)		(193	)		—		(806	)
Contracts purchased during the period		572			250			1,475		193
Change in the fair value of outstanding contracts		—			—			—		—
Ending balance of over-the-counter options	$	572		$	250		$	1,475	$	193

Effect of the Partnership's derivative instruments on the condensed consolidated statements of operations

The effect of the Partnership’s derivative instruments on the consolidated statements of operations for fiscal 2025, 2024 and 2023 are as follows:

	Unrealized Gains (Losses) Recognized in Income
Derivatives Not Designated as Hedging Instruments	Location	Amount
Commodity-related derivatives:
Fiscal 2025	Cost of products sold	$	2,422
Fiscal 2024	Cost of products sold	$	(14,598	)
Fiscal 2023	Cost of products sold	$	(3,671	)

Fair value of the Partnership's recognized derivative assets and liabilities on a gross basis and amounts offset on the condensed consolidated balance sheets

The following table presents the fair value of the Partnership’s recognized derivative assets and liabilities on a gross basis and amounts offset on the consolidated balance sheets subject to enforceable master netting arrangements or similar agreements:

	As of September 27, 2025
						Net amounts
						presented in the
	Gross amounts		Effects of netting			balance sheet
Asset Derivatives
Commodity-related derivatives	$	4,213	$	(2,607	)	$	1,606
	$	4,213	$	(2,607	)	$	1,606
Liability Derivatives
Commodity-related derivatives	$	4,543	$	(2,607	)	$	1,936
	$	4,543	$	(2,607	)	$	1,936

	As of September 28, 2024
						Net amounts
						presented in the
	Gross amounts		Effects of netting			balance sheet
Asset Derivatives
Commodity-related derivatives	$	13,649	$	(8,758	)	$	4,891
	$	13,649	$	(8,758	)	$	4,891
Liability Derivatives
Commodity-related derivatives	$	14,502	$	(8,758	)	$	5,744
	$	14,502	$	(8,758	)	$	5,744