Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Net sales	$ 1,813,366	$ 1,711,377	$ 5,233,795	$ 5,113,616
Cost of sales	1,694,830	1,580,689	4,891,095	4,717,556
Gross profit	118,536	130,688	342,700	396,060
Operating expenses:
Selling, general and administrative	61,421	58,708	190,408	186,236
Research and development	8,144	8,394	23,980	25,002
Restructuring costs (recovery)	1,021	(3,908)	15,972	121
Other Cost and Expense, Operating	890	918	2,718	1,303
Total operating expenses	71,476	64,112	233,078	212,662
Operating income	47,060	66,576	109,622	183,398
Interest income	492	219	1,064	658
Interest expense	(7,284)	(5,503)	(20,324)	(16,256)
Other income, net	1,000	952	3,747	6,021
Interest and other, net	(5,792)	(4,332)	(15,513)	(9,577)
Income before income taxes	41,268	62,244	94,109	173,821
Provision for income taxes	7,305	25,840	190,424	60,836
Net income (loss)	$ 33,963	$ 36,404	$ (96,315)	$ 112,985
Net income (loss) per share:
Basic	$ 0.49	$ 0.48	$ (1.37)	$ 1.52
Diluted	$ 0.47	$ 0.47	$ (1.37)	$ 1.45
Weighted average shares used in computing per share amounts:
Basic	68,907	75,332	70,366	74,548
Diluted	72,053	78,241	70,366	77,917