Restatement of Condensed Consolidated Financial Statements - Condensed Consolidated Statements of Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2022	Jan. 01, 2022
Restatement of Condensed Consolidated Financial Statements
Net sales	$ 2,355,808	$ 1,756,326
Cost of sales	2,160,422	1,615,029
Gross profit	195,386	141,297
Operating expenses:
Selling, general and administrative	60,730	61,475
Research and development	5,599	4,777
Restructuring and other	631	1,414
Gain on sale of long-lived assets	0	(4,610)
Total operating expenses	66,960	63,056
Operating income	128,426	78,241
Interest income	2,933	309
Interest expense	(8,681)	(4,877)
Other income (expense), net	(6,712)	2,072
Interest and other, net	(12,460)	(2,496)
Income before income taxes	115,966	75,745
Provision for income taxes	20,852	19,568
Net income before noncontrolling interest	95,114	56,177
Less: Net income attributable to noncontrolling interest	3,100	0
Net income attributable to common shareholders	$ 92,014	$ 56,177
Net income attributable to common shareholders per share:
Basic	$ 1.59	$ 0.87
Diluted	$ 1.54	$ 0.85
Weighted average shares used in computing per share amounts:
Basic	57,727	64,399
Diluted	59,867	66,233
Previously Reported
Restatement of Condensed Consolidated Financial Statements
Net sales	$ 2,361,361	$ 1,757,325
Cost of sales	2,170,654	1,612,836
Gross profit	190,707	144,489
Operating expenses:
Selling, general and administrative	60,730	61,475
Research and development	5,599	4,777
Restructuring and other	631	1,414
Gain on sale of long-lived assets		(4,610)
Total operating expenses	66,960	63,056
Operating income	123,747	81,433
Interest income	2,933	309
Interest expense	(8,681)	(4,877)
Other income (expense), net	(6,712)	2,072
Interest and other, net	(12,460)	(2,496)
Income before income taxes	111,287	78,937
Provision for income taxes	19,788	20,303
Net income before noncontrolling interest	91,499	58,634
Less: Net income attributable to noncontrolling interest	3,100
Net income attributable to common shareholders	$ 88,399	$ 58,634
Net income attributable to common shareholders per share:
Basic	$ 1.53	$ 0.91
Diluted	$ 1.48	$ 0.89
Weighted average shares used in computing per share amounts:
Basic	57,727	64,399
Diluted	59,867	66,233
Investigation Adjustments
Restatement of Condensed Consolidated Financial Statements
Net sales	$ (5,553)	$ (999)
Cost of sales	(10,232)	2,193
Gross profit	4,679	(3,192)
Operating expenses:
Operating income	4,679	(3,192)
Income before income taxes	4,679	(3,192)
Provision for income taxes	1,064	(735)
Net income before noncontrolling interest	3,615	(2,457)
Net income attributable to common shareholders	$ 3,615	$ (2,457)
Net income attributable to common shareholders per share:
Basic	$ 0.06	$ (0.04)
Diluted	$ 0.06	$ (0.04)