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Financial Instruments and Risk Management (Tables) | 12 Months Ended
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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 |

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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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