Notes Payable - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Jul. 14, 2025	Mar. 21, 2025	Dec. 21, 2024
Nonrelated Party
Debt Instrument [Line Items]
Notes payable, current portion	$ 4,349	$ 4,432
Notes payable, long-term portion	42,018	56,234
Notes Payable
Debt Instrument [Line Items]
Unpaid Principal Balance	59,473	78,799
Fair Value Measurement Adjustments	(3,935)	(7,280)
Original Issue Discount and Proceeds Allocated to Warrants	(9,171)	(10,853)
Net Carrying Value	46,367	60,666
2023 Unsecured SPA Notes | Notes Payable
Debt Instrument [Line Items]
Unpaid Principal Balance	4,753	8,100
Fair Value Measurement Adjustments	78	(622)
Original Issue Discount and Proceeds Allocated to Warrants	(475)	(810)
Net Carrying Value	$ 4,356	$ 6,668
Junior Secured SPA Notes | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	10.00%	10.00%
Unpaid Principal Balance	$ 7,107	$ 12,107
Fair Value Measurement Adjustments	156	(705)
Original Issue Discount and Proceeds Allocated to Warrants	0	0
Net Carrying Value	$ 7,263	$ 11,402
2024 Unsecured SPA Notes | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	10.00%	10.00%			10.00%
Unpaid Principal Balance	$ 33	$ 6,070
Fair Value Measurement Adjustments	7	(252)
Original Issue Discount and Proceeds Allocated to Warrants	0	0
Net Carrying Value	$ 40	$ 5,818
2025 March Unsecured SPA Notes
Debt Instrument [Line Items]
Contractual Interest Rates				10.00%
2025 March Unsecured SPA Notes | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	10.00%	10.00%		18.00%
Unpaid Principal Balance	$ 8,538	$ 5,508
Fair Value Measurement Adjustments	(2,393)	(1,096)
Original Issue Discount and Proceeds Allocated to Warrants	(2,703)	(2,304)
Net Carrying Value	$ 3,442	$ 2,108
2025 July Unsecured SPA Notes
Debt Instrument [Line Items]
Contractual Interest Rates			10.00%
2025 July Unsecured SPA Notes | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	10.00%	10.00%	18.00%
Unpaid Principal Balance	$ 29,193	$ 37,592
Fair Value Measurement Adjustments	(422)	(3,079)
Original Issue Discount and Proceeds Allocated to Warrants	(5,993)	(7,717)
Net Carrying Value	$ 22,778	$ 26,796
Unsecured Convertible Notes | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	4.27%	4.27%
Unpaid Principal Balance	$ 5,500	$ 5,000
Fair Value Measurement Adjustments	(1,361)	(1,558)
Original Issue Discount and Proceeds Allocated to Warrants	0	0
Net Carrying Value	$ 4,139	$ 3,442
Notes payable – China other | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	0.00%	0.00%
Unpaid Principal Balance	$ 4,349	$ 4,290
Fair Value Measurement Adjustments	0	0
Original Issue Discount and Proceeds Allocated to Warrants	0	0
Net Carrying Value	$ 4,349	$ 4,290
2025 Convertible Note - AIXC | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates		0.00%
Unpaid Principal Balance		$ 132
Fair Value Measurement Adjustments		32
Original Issue Discount and Proceeds Allocated to Warrants		(22)
Net Carrying Value		$ 142
Minimum | 2023 Unsecured SPA Notes | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	10.00%	10.00%
Maximum | 2023 Unsecured SPA Notes | Notes Payable
Debt Instrument [Line Items]
Contractual Interest Rates	15.00%	15.00%