Business Segments (Schedule Of Financial Information About Company's Reportable Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017	Apr. 02, 2016	Oct. 01, 2016
Segment Reporting Information [Line Items]
Net sales	$ 604,349	$ 618,660	$ 1,239,368	$ 1,235,324
Operating income (loss)	32,571	23,346	66,474	44,870
Interest expense	3,262	3,674	6,536	7,208
Interest income	(1,185)	(1,015)	(2,256)	(1,947)
Miscellaneous	1,925	(1,128)	1,251	(2,748)
Income before income taxes	32,419	19,559	63,445	36,861
Total assets	1,804,347		1,804,347		$ 1,765,819
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Total assets	78,294		78,294		28,416
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(22,448)	(25,827)	(51,498)	(55,693)
Operating income (loss)	(24,921)	(26,277)	(51,820)	(49,355)
AMER | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	272,064	330,240	586,715	635,337
Operating income (loss)	8,229	15,451	23,026	23,837
Total assets	516,359		516,359		590,850
Asia Pacific [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	309,758	270,544	619,727	569,891
Operating income (loss)	50,484	34,862	98,724	71,813
Total assets	1,073,939		1,073,939		1,009,917
EMEA [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	44,975	43,703	84,424	85,789
Operating income (loss)	(1,221)	$ (690)	(3,456)	$ (1,425)
Total assets	$ 135,755		$ 135,755		$ 136,636