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INCOME TAXES (Effective income tax rate reconciliation) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Jan. 02, 2016 | Sep. 30, 2017 | Oct. 01, 2016 | Oct. 03, 2015
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Computed income tax expense based on U.S. statutory rate |  |  |  |  |  |  |  |  | $ 36,290 | $ 19,163 | $ 13,197
Effect of earnings of foreign subsidiaries subject to different tax rates |  |  |  |  |  |  |  |  | (20,226) | (7,330) | (6,103)
Benefits from foreign approved enterprise zones |  |  |  |  |  |  |  |  | (21,556) | (8,531) | (5,855)
Benefits from research and development tax credits (including prior years) |  |  |  |  |  |  |  |  | (1,859) | (2,839) | (4,090)
Benefits from foreign tax credits |  |  |  |  |  |  |  |  | (26,119) | 0 | 0
Change in permanent reinvestment assertion |  |  |  |  |  |  |  |  | 0 | (9,696) | (19,704)
Tax impact on restructuring |  |  |  |  |  |  |  |  | 0 | 4,238 | 0
Tax audit settlement |  |  |  |  |  |  |  |  | 0 | 4,889 | 0
Effect of permanent items |  |  |  |  |  |  |  |  | 778 | (2,274) | 1,822
Non-deductible goodwill impairment |  |  |  |  |  |  |  |  | 8,805 | 0 | 0
Changes in valuation allowance |  |  |  |  |  |  |  |  | 6,458 | 3,585 | 2,634
Foreign operations (withholding taxes, deferred taxes on unremitted earnings, US taxation of foreign earnings) |  |  |  |  |  |  |  |  | 6,039 | 4,981 | 4,904
Reserve for uncertain tax positions |  |  |  |  |  |  |  |  | 2,936 | 208 | 886
State income tax expense |  |  |  |  |  |  |  |  | 60 | 996 | (1,543)
Other, net |  |  |  |  |  |  |  |  | 259 | 248 | 918
Provision for income taxes | $ 2,242 | $ (17,867) | $ 4,882 | $ 2,608 | $ (5,661) | $ 7,519 | $ 7,045 | $ (1,265) | $ (8,135) | $ 7,638 | $ (12,934)

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