Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Net sales	$ 2,126,639	$ 1,675,629	$ 4,314,657	$ 3,420,429
Cost of sales	1,973,537	1,560,931	4,012,218	3,196,265
Gross profit	153,102	114,698	302,439	224,164
Operating expenses:
Selling, general and administrative	64,186	65,384	127,214	128,987
Research and development	7,599	8,221	14,036	15,836
Restructuring and other	3,202	(7,681)	5,531	16,779
Total operating expenses	74,987	65,924	146,781	161,602
Operating income	78,115	48,774	155,658	62,562
Interest income	364	287	558	572
Interest expense	(8,472)	(6,826)	(16,743)	(13,040)
Other income (expense), net	(891)	(483)	(6,885)	2,747
Interest and other, net	(8,999)	(7,022)	(23,070)	(9,721)
Income before income taxes	69,116	41,752	132,588	52,841
Provision for income taxes	28,231	17,120	53,751	183,119
Net income (loss)	$ 40,885	$ 24,632	$ 78,837	$ (130,278)
Net income (loss) per share:
Basic	$ 0.59	$ 0.35	$ 1.15	$ (1.83)
Diluted	$ 0.57	$ 0.33	$ 1.11	$ (1.83)
Weighted average shares used in computing per share amounts:
Basic	68,821	70,441	68,556	71,096
Diluted	71,446	73,582	71,162	71,096