Reportable Segments, Geographic Information and Major Customers - Reportable Segments Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2017 USD ($)	Jul. 01, 2017 USD ($)	Apr. 01, 2017 USD ($)	Dec. 31, 2016 USD ($)	Oct. 01, 2016 USD ($)	Jul. 02, 2016 USD ($)	Apr. 02, 2016 USD ($)	Jan. 02, 2016 USD ($)	Sep. 30, 2017 USD ($) segment	Oct. 01, 2016 USD ($)	Oct. 03, 2015 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment									3
Net sales	$ 669,852	$ 618,832	$ 604,349	$ 635,019	$ 653,064	$ 667,616	$ 618,660	$ 616,664	$ 2,528,052	$ 2,556,004	$ 2,654,290
Operating income (loss)									129,908	99,439	115,436
Other income (expense):
Interest expense									(13,578)	(14,635)	(13,964)
Interest income									5,042	4,242	3,499
Miscellaneous									451	(1,652)	1,324
Income before income taxes									121,823	87,394	106,295
Depreciation									45,330	47,414	48,378
Capital expenditures									38,538	31,123	35,076
Total assets	1,976,182				1,765,819				1,976,182	1,765,819
Corporate
Operating income (loss)									(105,922)	(117,237)	(105,237)
Other income (expense):
Depreciation									4,581	4,497	4,110
Capital expenditures									863	2,549	915
Elimination of inter-segment sales
Net sales									(110,384)	(105,057)	(160,924)
Corporate and eliminations
Other income (expense):
Total assets	44,390				28,416				44,390	28,416
AMER | Operating Segments
Net sales									1,166,346	1,328,760	1,389,017
Operating income (loss)									41,924	64,921	68,585
Other income (expense):
Depreciation									19,694	19,937	17,753
Capital expenditures									18,111	14,389	17,595
Total assets	595,851				590,850				595,851	590,850
APAC | Operating Segments
Net sales									1,279,261	1,161,851	1,285,905
Operating income (loss)									200,103	155,501	160,217
Other income (expense):
Depreciation									15,588	16,874	18,176
Capital expenditures									13,816	10,786	9,590
Total assets	1,163,111				1,009,917				1,163,111	1,009,917
EMEA | Operating Segments
Net sales									192,829	170,450	140,292
Operating income (loss)									(6,197)	(3,746)	(8,129)
Other income (expense):
Depreciation									5,467	6,106	8,339
Capital expenditures									5,748	3,399	$ 6,976
Total assets	$ 172,830				$ 136,636				$ 172,830	$ 136,636