Notes Payable - Schedule of Note Payable Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Notes Payable [Roll Forward]
Fair value measurement adjustments	$ 3,341	$ 10,097
Debt issuance costs	1,160	429
Notes Payable
Notes Payable [Roll Forward]
Beginning balance	60,666	49,488	$ 49,488
New Issuances	5,879	11,903
Repayments of debt	(132)	(6)
Conversion of Debt to Equity	(25,317)	(14,845)
Fair Value Adjustments of Debt	5,212	(21,780)
Other Adjustments	59	(86)
Ending balance	46,367	24,674	60,666
Secured SPA Notes \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance		5,457	5,457
New Issuances		0
Repayments of debt		0
Conversion of Debt to Equity		(589)
Fair Value Adjustments of Debt		(2,479)
Other Adjustments		0
Ending balance		2,389
2023 Unsecured SPA Notes \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	6,668	6,716	6,716
New Issuances	3,600	0
Repayments of debt	0	0
Conversion of Debt to Equity	(6,724)	(4,692)
Fair Value Adjustments of Debt	812	(2,024)
Other Adjustments	0
Ending balance	4,356	0	6,668
Unsecured Convertible Notes \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	3,442
New Issuances	376
Repayments of debt	0
Conversion of Debt to Equity	0
Fair Value Adjustments of Debt	321	0
Other Adjustments	0
Ending balance	4,139		3,442
Junior Secured SPA Notes \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	11,402	26,059	26,059
New Issuances	0	0
Repayments of debt	0	0
Conversion of Debt to Equity	(5,146)	(9,564)
Fair Value Adjustments of Debt	1,007	(10,435)
Other Adjustments	0
Ending balance	7,263	6,060	11,402
2024 Unsecured SPA Notes \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	5,818	7,032	7,032
New Issuances	0	11,096
Repayments of debt	0	0
Conversion of Debt to Equity	(6,300)	0
Fair Value Adjustments of Debt	522	(6,798)
Other Adjustments	0
Ending balance	40	11,330	5,818
2025 March Unsecured SPA Notes \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	2,108	0	0
New Issuances	1,903	807
Repayments of debt	0	0
Conversion of Debt to Equity	(656)	0
Fair Value Adjustments of Debt	87	(44)
Other Adjustments	0	0
Ending balance	3,442	763	2,108
2025 July Unsecured SPA Notes \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	26,796	0	0
New Issuances	0	0
Repayments of debt	0	0
Conversion of Debt to Equity	(6,491)	0
Fair Value Adjustments of Debt	2,473	0
Other Adjustments	0	0
Ending balance	22,778	0	26,796
Notes payable – China other \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	4,290	4,173	4,173
New Issuances	0	0
Repayments of debt	0	0
Conversion of Debt to Equity	0	0
Fair Value Adjustments of Debt	0	0
Other Adjustments	59	(41)
Ending balance	4,349	4,132	4,290
2025 Convertible Note - AIXC \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance	142
New Issuances	0
Repayments of debt	(132)
Conversion of Debt to Equity	0
Fair Value Adjustments of Debt	(10)
Other Adjustments	0
Ending balance	$ 0		142
Auto loans \| Notes Payable
Notes Payable [Roll Forward]
Beginning balance		51	$ 51
New Issuances		0
Repayments of debt		(6)
Conversion of Debt to Equity		0
Fair Value Adjustments of Debt		0
Other Adjustments		(45)
Ending balance		$ 0

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- Definition

Debt Instrument, Other Adjustment Amount

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Debt Issuance Costs

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- Definition

Fair Value, Option, Aggregate Differences, Reduction, Long-Term Debt Instruments

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No definition available.

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- Definition

Notes Payable

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No definition available.

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- Definition

Amount of principal of debt issued.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Name Accounting Standards Codification
-Section S99
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Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
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