Notes Payable - Schedule of Note Payable Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Notes Payable [Roll Forward]
Fair value measurement adjustments	$ (3,130)	$ 7,467	$ 20,250	$ 8,302
Debt issuance costs	3,063	681	5,293	871
Notes Payable
Notes Payable [Roll Forward]
Beginning balance	28,033	77,394	49,488	91,150
New Issuances	87,449	17,873	113,139	41,769
Addition of Debt upon Consolidation of AIXC	3,237		3,237
Repayment of Debt	0	6	6	24
Conversion of Debt to Equity	(21,768)	(27,651)	(55,820)	(44,456)
Modifications and Extinguishments of Debt		2,699		2,699
Fair Value Adjustments of Debt	(18,074)	(14,881)	(31,131)	(35,690)
Reclassification of Debt Between Debt Categories		0		0
Other Adjustments	25	72	(5)	52
Ending balance	78,902	55,500	78,902	55,500
Secured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	0	42,715	5,457	74,232
New Issuances	0	1,125	0	8,451
Addition of Debt upon Consolidation of AIXC	0		0
Repayment of Debt	0	0	0	0
Conversion of Debt to Equity	0	(20,376)	(3,535)	(36,961)
Modifications and Extinguishments of Debt	0	5,158		5,158
Fair Value Adjustments of Debt	0	(8,408)	(1,922)	(30,666)
Reclassification of Debt Between Debt Categories		0		0
Other Adjustments	0	0	0	0
Ending balance	0	20,214	0	20,214
2023 Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	4,539	10,503	6,716	11,938
New Issuances	4,500	0	9,000	0
Addition of Debt upon Consolidation of AIXC			0
Repayment of Debt	0		0	0
Conversion of Debt to Equity	(1,757)	(7,275)	(6,449)	(7,495)
Modifications and Extinguishments of Debt		(2,394)		(2,394)
Fair Value Adjustments of Debt	212	(2,355)	(1,773)	(3,570)
Reclassification of Debt Between Debt Categories		22,371		22,371
Other Adjustments	0	0	0
Ending balance	7,494	20,850	7,494	20,850
Unsecured Convertible Note | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		19,234		0
New Issuances		10,816		27,386
Repayment of Debt		0		0
Conversion of Debt to Equity		0		0
Modifications and Extinguishments of Debt		(65)		(65)
Fair Value Adjustments of Debt		(114)		2,550
Reclassification of Debt Between Debt Categories		(29,871)		(29,871)
Other Adjustments		0
Ending balance	0	0	0	0
Junior Secured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	0	0	26,059	0
New Issuances	17,423	5,932	17,423	5,932
Addition of Debt upon Consolidation of AIXC	0		0
Repayment of Debt	0	0	0	0
Conversion of Debt to Equity	0	0	(16,468)	0
Modifications and Extinguishments of Debt		0		0
Fair Value Adjustments of Debt	106	(4,004)	(9,485)	(4,004)
Reclassification of Debt Between Debt Categories		7,500		7,500
Other Adjustments	0	0	0
Ending balance	17,529	9,428	17,529	9,428
2024 Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	10,009		7,032
New Issuances	21,859		32,955
Addition of Debt upon Consolidation of AIXC	0		0
Repayment of Debt	0		0
Conversion of Debt to Equity	(15,809)		(21,656)
Fair Value Adjustments of Debt	(6,233)		(8,505)
Other Adjustments	0		0
Ending balance	9,826		9,826
2025 March Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	9,297		0
New Issuances	5,103		15,197
Addition of Debt upon Consolidation of AIXC	0		0
Repayment of Debt	0		0
Conversion of Debt to Equity	(4,202)		(7,712)
Fair Value Adjustments of Debt	(2,987)		(274)
Other Adjustments	0		0
Ending balance	7,211		7,211
2025 July Unsecured SPA Notes | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	0		0
New Issuances	38,564		38,564
Addition of Debt upon Consolidation of AIXC			0
Repayment of Debt	0		0
Conversion of Debt to Equity	0		0
Fair Value Adjustments of Debt	(9,172)		(9,172)
Other Adjustments	0		0
Ending balance	29,392		29,392
Notes payable – China other | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	4,188	4,878	4,173	4,898
New Issuances	0	0	0	0
Addition of Debt upon Consolidation of AIXC	0		0
Repayment of Debt	0	0	0	0
Conversion of Debt to Equity	0	0	0	0
Modifications and Extinguishments of Debt		0		0
Fair Value Adjustments of Debt	0	0	0	0
Reclassification of Debt Between Debt Categories		0		0
Other Adjustments	25	72	40	52
Ending balance	4,213	4,950	4,213	4,950
2025 Convertible Note - AIXC | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	0		0
New Issuances	0		0
Addition of Debt upon Consolidation of AIXC	340		340
Repayment of Debt	0		0
Conversion of Debt to Equity	0		0
Fair Value Adjustments of Debt	0		0
Other Adjustments	0		0
Ending balance	340		340
Promissory Notes - AIXC | Notes Payable
Notes Payable [Roll Forward]
Beginning balance	0		0
New Issuances	0		0
Addition of Debt upon Consolidation of AIXC	2,897		2,897
Repayment of Debt	0		0
Conversion of Debt to Equity	0		0
Fair Value Adjustments of Debt	0		0
Other Adjustments	0		0
Ending balance	2,897		2,897
Auto loans | Notes Payable
Notes Payable [Roll Forward]
Beginning balance		64	51	82
New Issuances		0	0	0
Addition of Debt upon Consolidation of AIXC			0
Repayment of Debt		6	6	24
Conversion of Debt to Equity		0	0	0
Modifications and Extinguishments of Debt		0		0
Fair Value Adjustments of Debt		0	0	0
Reclassification of Debt Between Debt Categories		0		0
Other Adjustments		0	(45)	0
Ending balance	$ 0	$ 58	$ 0	$ 58