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INCOME TAXES (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended | 24 Months Ended |
--- | --- | --- | ---
Oct. 03, 2020 | Sep. 28, 2019 | Sep. 29, 2018 | Sep. 28, 2019 | Sep. 30, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | $ 95,700 |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Cumulative tax effects of jurisdictional adjustments | 3,500 |  |  |  |
Income tax expense | 9,400 |  |  | $ 114,000 |
Deferred tax asset, income tax expense | 5,500 |  | $ 2,800 |  |
Transition tax for accumulated foreign earnings, income tax expense |  |  |  | 111,200 |
Tax incentive arrangement, benefit to income tax provision | $ 6,800 | $ 5,000 | $ 20,400 |  |
Tax incentive arrangement, benefit to income tax provision, earnings per share impact (in dollars per share) | $ 0.11 | $ 0.08 | $ 0.29 |  |
Remeasurement of deferred taxes | $ (145) | $ 5,480 | $ 2,760 |  |
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions | 398 | 523 | 506 |  |
Unrecognized Tax Benefits | 13,064 | 12,925 | 13,038 | 12,925 | $ 12,062
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 144,600 |  |  |  |
U.S. one-time transition tax | 0 | 9,369 | $ 101,854 |  |
Unrecognized tax benefit that if recognized would impact effective tax rate | 13,200 |  |  |  |
Unrecognized tax benefits, accrued interest and penalties | 1,600 |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic | $ 9,100 |  |  |  |
Minimum [Member] |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating Loss Carryforward, Foreign, Statute Of Limitions | 4 years |  |  |  |
Minimum [Member] | Operations In Singapore And Malaysia [Member] |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent |  |  | 0.00% |  |
Maximum [Member] |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating Loss Carryforward, Foreign, Statute Of Limitions | 6 years |  |  |  |
Pennsylvania Tax Law [Member] |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local |  | $ 0 | $ 4,000 | $ 0 | $ 4,000

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