Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2024	Mar. 25, 2023	Mar. 30, 2024	Mar. 25, 2023
Revenue:
Total revenue	$ 424,301	$ 266,854	$ 792,751	$ 473,166
Cost of revenue:
Total cost of revenue	380,139	224,007	678,483	395,125
Gross profit	44,162	42,847	114,268	78,041
Operating expenses:
Research and development expenses	46,462	49,666	88,606	100,406
Selling, general, and administrative expenses	48,652	50,898	95,663	104,921
Total operating expenses	95,114	100,564	184,269	205,327
Operating loss	(50,952)	(57,717)	(70,001)	(127,286)
Other income, net	9,812	2,284	16,011	4,118
Loss before income tax	(41,140)	(55,433)	(53,990)	(123,168)
Income tax benefit (expense)	188	17	71	(234)
Net loss	(40,952)	(55,416)	(53,919)	(123,402)
Net loss attributable to noncontrolling interests	(34,372)	(49,298)	(45,411)	(110,091)
Net loss attributable to common stockholders	$ (6,580)	$ (6,118)	$ (8,508)	$ (13,311)
Loss per share of Class A Common Stock:
Basic (in dollars per share)	$ (0.07)	$ (0.10)	$ (0.10)	$ (0.22)
Diluted (in dollars per share)	$ (0.07)	$ (0.10)	$ (0.10)	$ (0.22)
Weighted-average shares of Class A Common Stock outstanding:
Basic (in shares)	93,043,769	60,503,119	88,155,791	59,352,634
Diluted (in shares)	93,043,769	60,503,119	88,155,791	59,352,634
Systems
Revenue:
Total revenue	$ 401,662	$ 257,603	$ 757,874	$ 455,504
Cost of revenue:
Total cost of revenue	359,151	213,060	645,555	373,991
Software maintenance and support
Revenue:
Total revenue	2,566	1,461	4,735	2,698
Cost of revenue:
Total cost of revenue	1,936	2,106	3,662	3,777
Operation services
Revenue:
Total revenue	20,073	7,790	30,142	14,964
Cost of revenue:
Total cost of revenue	$ 19,052	$ 8,841	$ 29,266	$ 17,357