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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									$ 41,358	$ 19,658	$ 13,666
Effect of earnings of foreign subsidiaries subject to different tax rates									(22,832)	(7,584)	(6,344)
Benefits from foreign approved enterprise zones									(23,294)	(8,701)	(6,016)
Benefits from research and development tax credits									(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
Deferred taxes not benefited									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 (net of federal benefit)									60	996	(1,543)
Other, net									276	248	918
Provision for income taxes	$ 2,539	$ (17,657)	$ 5,151	$ 2,573	$ (5,576)	$ 7,619	$ 6,978	$ (1,312)	$ (7,394)	$ 7,709	$ (12,867)

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