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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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