Financial Instruments and Risk Management (Tables)

12 Months Ended

Sep. 26, 2020

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 26, 2020 and September 28, 2019, respectively:

	As of September 26, 2020			As of September 28, 2019
Asset Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging    instruments:
Commodity-related derivatives	Other current assets	$	1,066	Other current assets	$	4,082
	Other assets		461	Other assets		167
		$	1,527		$	4,249
Liability Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging    instruments:
Commodity-related derivatives	Other current liabilities	$	2,684	Other current liabilities	$	3,360
	Other liabilities		—	Other liabilities		—
		$	2,684		$	3,360

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 2020					Fiscal 2019
	Assets			Liabilities		Assets			Liabilities
Beginning balance of over-the-counter options	$	419		$	—	$	1,546		$	361
Beginning balance realized during the period		(419	)		—		(1,533	)		(361	)
Contracts purchased during the period		—			—		83			—
Change in the fair value of outstanding contracts		—			—		323			—
Ending balance of over-the-counter options	$	—		$	—	$	419		$	—

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 2020, 2019 and 2018 are as follows:

	Unrealized (Losses) Gains Recognized in Income
Derivatives Not Designated as Hedging Instruments	Location	Amount
Commodity-related derivatives:
Fiscal 2020	Cost of products sold	$	(381	)
Fiscal 2019	Cost of products sold	$	(8,008	)
Fiscal 2018	Cost of products sold	$	310

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 26, 2020
						Net amounts
						presented in the
	Gross amounts		Effects of netting			balance sheet
Asset Derivatives
Commodity-related derivatives	$	6,836	$	(5,309	)	$	1,527
	$	6,836	$	(5,309	)	$	1,527
Liability Derivatives
Commodity-related derivatives	$	7,993	$	(5,309	)	$	2,684
	$	7,993	$	(5,309	)	$	2,684

	As of September 28, 2019
						Net amounts
						presented in the
	Gross amounts		Effects of netting			balance sheet
Asset Derivatives
Commodity-related derivatives	$	10,464	$	(6,215	)	$	4,249
	$	10,464	$	(6,215	)	$	4,249
Liability Derivatives
Commodity-related derivatives	$	9,575	$	(6,215	)	$	3,360
	$	9,575	$	(6,215	)	$	3,360