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INCOME TAXES (Effective income tax rate reconciliation) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Sep. 29, 2018 | Sep. 30, 2017 | Oct. 01, 2016
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Computed income tax expense based on U.S. statutory rate |  |  |  |  |  |  |  |  | $ 43,568 | $ 41,358 | $ 19,658
Effect of earnings of foreign subsidiaries subject to different tax rates |  |  |  |  |  |  |  |  | (12,947) | (22,832) | (7,584)
Benefits from foreign approved enterprise zones |  |  |  |  |  |  |  |  | (20,429) | (23,294) | (8,701)
Benefits from research and development tax credits |  |  |  |  |  |  |  |  | (2,785) | (1,859) | (2,839)
Benefits from foreign tax credits |  |  |  |  |  |  |  |  | (3,939) | (26,119) | 0
Provisional estimate for the one-time U.S. transition tax, net of uncertain tax positions and foreign tax credits |  |  |  |  |  |  |  |  | 101,854 | 0 | 0
Remeasurement of net U.S. deferred tax assets to reflect a reduction in the U.S. federal corporate tax rate |  |  |  |  |  |  |  |  | 2,760 | 0 | 0
Change in permanent reinvestment assertion |  |  |  |  |  |  |  |  | 0 | 0 | (9,696)
Tax impact on restructuring |  |  |  |  |  |  |  |  | 0 | 0 | 4,238
Tax audit settlement |  |  |  |  |  |  |  |  | 0 | 0 | 4,889
Effect of permanent items |  |  |  |  |  |  |  |  | (758) | 778 | (2,274)
Non-deductible goodwill impairment |  |  |  |  |  |  |  |  | 0 | 8,805 | 0
Deferred taxes not benefited |  |  |  |  |  |  |  |  | 7,366 | 6,458 | 3,585
Foreign operations (withholding taxes, deferred taxes on unremitted earnings, US taxation of foreign earnings) |  |  |  |  |  |  |  |  | 5,746 | 6,039 | 4,981
Reserve for uncertain tax positions |  |  |  |  |  |  |  |  | 530 | 2,936 | 208
State income tax expense (net of federal benefit) |  |  |  |  |  |  |  |  | 56 | 60 | 996
Other, net |  |  |  |  |  |  |  |  | (278) | 276 | 248
Provision for income taxes | $ (1,750) | $ 7,282 | $ 4,800 | $ 110,412 | $ 2,539 | $ (17,657) | $ 5,151 | $ 2,573 | $ 120,744 | $ (7,394) | $ 7,709

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