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BASIS OF PRESENTATION (Recent Accounting Pronouncements) (Narrative) (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 29, 2019 | Sep. 29, 2020 | Oct. 03, 2020 | Sep. 28, 2019 | Sep. 29, 2018 | Sep. 30, 2017 | Dec. 01, 2013
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Cumulative effect of accounting changes |  |  |  | $ (769) | $ 534 | $ 5,420 |
Operating lease liability |  |  | $ 24,228 |  |  |  |
Operating right-of-use assets |  |  | 22,688 | 0 |  |  |
Decrease financing obligation |  |  | $ 0 | (14,207) |  |  | $ (20,000)
Retained earnings |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Cumulative effect of accounting changes |  |  |  | $ (769) | $ 534 | $ 4,006 |
Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Operating lease liability | $ 23,800 |  |  |  |  |  |
Operating right-of-use assets | 22,200 |  |  |  |  |  |
Decrease financing obligation | 14,500 |  |  |  |  |  |
Decrease property, plant and equipment | 15,300 | $ 15,300 |  |  |  |  |
Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member] | Retained earnings |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Cumulative effect of accounting changes | $ 800 |  |  |  |  |  |

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