Notes Payable - Schedule of Note Payable Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 30, 2025	Dec. 31, 2025	Dec. 31, 2024
Notes Payable [Roll Forward]
Fair value measurement adjustments		$ 21,439	$ 19,653
Debt issuance costs		6,044	4,886
Notes Payable
Notes Payable [Roll Forward]
Beginning balance		49,488	91,150
New Issuances		131,600	57,291
Addition of Debt upon Consolidation of AIXC		3,237
Repayment of Debt		3,256	31
Conversion of Debt to Equity		(81,746)	(66,678)
Modifications and Extinguishments of Debt			2,699
Fair Value Adjustments of Debt		(39,082)	(34,218)
Reclassification of Debt Between Debt Categories		0	0
Other Adjustments		425	(725)
Ending balance		60,666	49,488
Secured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		5,457	74,232
New Issuances		0	10,701
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0	0
Conversion of Debt to Equity		(3,535)	(50,691)
Modifications and Extinguishments of Debt			5,158
Fair Value Adjustments of Debt		(1,922)	(33,943)
Reclassification of Debt Between Debt Categories		0	0
Other Adjustments		0	0
Ending balance		0	5,457
2023 Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		6,716	11,938
New Issuances		11,666	0
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0	0
Conversion of Debt to Equity		(9,133)	(14,931)
Modifications and Extinguishments of Debt			(2,394)
Fair Value Adjustments of Debt		(2,581)	(10,268)
Reclassification of Debt Between Debt Categories		0	22,371
Other Adjustments		0
Ending balance		6,668	6,716
Unsecured Convertible Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		0	0
New Issuances		3,535	34,885
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0	0
Conversion of Debt to Equity		0	0
Modifications and Extinguishments of Debt			(65)
Fair Value Adjustments of Debt		(93)	328
Reclassification of Debt Between Debt Categories		0	(35,148)
Other Adjustments		0
Ending balance		3,442	0
Junior Secured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		26,059	0
New Issuances		17,423	9,950
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0	0
Conversion of Debt to Equity		(23,031)	(1,056)
Modifications and Extinguishments of Debt			0
Fair Value Adjustments of Debt		(10,575)	9,665
Reclassification of Debt Between Debt Categories		1,526	7,500
Other Adjustments		0
Ending balance		11,402	26,059
2024 Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		7,032	0
New Issuances		42,565	1,755
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0	0
Conversion of Debt to Equity		(33,244)	0
Modifications and Extinguishments of Debt			0
Fair Value Adjustments of Debt		(10,535)	0
Reclassification of Debt Between Debt Categories		0	5,277
Other Adjustments		0
Ending balance		5,818	7,032
2025 March Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		0
New Issuances		17,847
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0
Conversion of Debt to Equity		(12,803)
Fair Value Adjustments of Debt		(2,936)
Reclassification of Debt Between Debt Categories		0
Other Adjustments		0
Ending balance		2,108	0
2025 July Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		0
New Issuances		38,564
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0
Conversion of Debt to Equity		0
Fair Value Adjustments of Debt		(10,242)
Reclassification of Debt Between Debt Categories		(1,526)
Other Adjustments		0
Ending balance		26,796	0
Notes payable – China other | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		4,173	4,898
New Issuances		0	0
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		0	0
Conversion of Debt to Equity		0	0
Modifications and Extinguishments of Debt			0
Fair Value Adjustments of Debt		0	0
Reclassification of Debt Between Debt Categories		0	0
Other Adjustments		117	(725)
Ending balance		4,290	4,173
2025 Convertible Note - AIXC | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		0
New Issuances		0
Addition of Debt upon Consolidation of AIXC		340
Repayment of Debt		0
Conversion of Debt to Equity		0
Fair Value Adjustments of Debt		(198)
Reclassification of Debt Between Debt Categories
Other Adjustments		0
Ending balance		142	0
Promissory Notes - AIXC
Notes Payable [Roll Forward]
Repayment of Debt	$ 3,300
Promissory Notes - AIXC | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		0
New Issuances		0
Addition of Debt upon Consolidation of AIXC		2,897
Repayment of Debt		3,250
Conversion of Debt to Equity		0
Fair Value Adjustments of Debt		0
Reclassification of Debt Between Debt Categories
Other Adjustments		353
Ending balance		0	0
Auto loans | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		51	82
New Issuances		0	0
Addition of Debt upon Consolidation of AIXC		0
Repayment of Debt		6	31
Conversion of Debt to Equity		0	0
Modifications and Extinguishments of Debt			0
Fair Value Adjustments of Debt		0	0
Reclassification of Debt Between Debt Categories		0	0
Other Adjustments		(45)	0
Ending balance		$ 0	$ 51