Financial Instruments and Risk Management (Tables)

9 Months Ended

Jun. 27, 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 condensed consolidated balance sheets as of June 27, 2020 and September 28, 2019, respectively:

	As of June 27, 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	$	1,093	Other current assets	$	4,082
	Other assets		122	Other assets		167
		$	1,215		$	4,249
Liability Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as    hedging instruments:
Commodity-related derivatives	Other current liabilities	$	3,214	Other current liabilities	$	3,360
	Other liabilities		—	Other liabilities		—
		$	3,214		$	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)
	Nine Months Ended June 27, 2020					Nine Months Ended June 29, 2019
	Assets			Liabilities		Assets			Liabilities
Beginning balance of over-the-counter options	$	419		$	—	$	1,546		$	361
Beginning balance realized during the period		(419	)		—		(1,488	)		(361	)
Contracts purchased during the period		—			—		434			—
Change in the fair value of outstanding contracts		—			—		997			—
Ending balance of over-the-counter options	$	—		$	—	$	1,489		$	—

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

The effect of the Partnership’s derivative instruments on the condensed consolidated statements of operations for the three and nine months ended June 27, 2020 and June 29, 2019 are as follows:

	Three Months Ended June 27, 2020			Three Months Ended June 29, 2019
Derivatives Not Designated as Hedging Instruments	Unrealized Gains (Losses) Recognized in Income			Unrealized Gains (Losses) Recognized in Income
	Location	Amount		Location	Amount
Commodity-related derivatives	Cost of products sold	$	861	Cost of products sold	$	138

	Nine Months Ended June 27, 2020				Nine Months Ended June 29, 2019
Derivatives Not Designated as Hedging Instruments	Unrealized Gains (Losses) Recognized in Income				Unrealized Gains (Losses) Recognized in Income
	Location	Amount			Location	Amount
Commodity-related derivatives	Cost of products sold	$	(1,077	)	Cost of products sold	$	(7,252	)

Fair Value of the Partnership's Senior Notes

.  Based upon quoted market prices (a Level 1 input), the fair value of the Senior Notes (also defined below in Note 10) of the Partnership are as follows:

	As of
	June 27,		September 28,
	2020		2019
5.5% senior notes due June 1, 2024	$	537,626	$	540,094
5.75% senior notes due March 1, 2025		253,125		253,178
5.875% senior notes due March 1, 2027		351,750		354,375
	$	1,142,501	$	1,147,647