Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Net sales	$ 8,233,859	$ 7,110,130	$ 6,868,619
Cost of sales	7,641,921	6,646,347	6,348,708
Gross profit	591,938	463,783	519,911
Operating expenses:
Selling, general and administrative	260,032	250,924	251,568
Research and development	27,552	30,754	33,716
Restructuring costs	13,753	29,146	1,339
Goodwill impairment	0	30,610	0
Other	4,484	2,908	6,821
Total operating expenses	305,821	344,342	293,444
Operating income	286,117	119,441	226,467
Interest income	1,111	1,268	1,265
Interest expense	(30,763)	(27,734)	(21,934)
Other income (expense), net	(10,846)	4,564	7,682
Interest and other, net	(40,498)	(21,902)	(12,987)
Income before income taxes	245,619	97,539	213,480
Provision for income taxes	104,104	193,072	74,647
Net income (loss)	$ 141,515	$ (95,533)	$ 138,833
Net income (loss) per share:
Basic	$ 2.05	$ (1.37)	$ 1.86
Diluted	$ 1.97	$ (1.37)	$ 1.78
Weighted-average shares used in computing per share amounts:
Basic	69,129	69,833	74,481
Diluted	71,678	69,833	78,128