Notes Payable - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Related Party
Debt Outstanding [Abstract]
Unpaid Principal Balance	$ 9,760	$ 8,964
Notes payable	542
Notes payable, current portion	(9,760)	(8,964)
Notes payable, less current portion	0	0
Nonrelated Party
Debt Outstanding [Abstract]
Notes payable, current portion	(91,150)	(5,097)
Notes payable, less current portion	0	(26,008)
Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance	118,917	41,719
Fair Value Measurement Adjustments	(14,293)	264
Original Issue Discount and Proceeds Allocated to Warrants	(12,932)	(10,878)
Net Carrying Value	91,692	$ 31,105
Notes Payable \| Nonrelated Party
Debt Outstanding [Abstract]
Unpaid Principal Balance	$ 118,251
Secured SPA Notes \| Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates	10.00%	10.00%
Unpaid Principal Balance	$ 100,052	$ 36,622
Fair Value Measurement Adjustments	(15,501)	264
Original Issue Discount and Proceeds Allocated to Warrants	(10,319)	(10,878)
Net Carrying Value	74,232	$ 26,008
Unsecured SPA Notes \| Notes Payable
Debt Outstanding [Abstract]
Unpaid Principal Balance	13,885
Fair Value Measurement Adjustments	1,208
Original Issue Discount and Proceeds Allocated to Warrants	(2,613)
Net Carrying Value	$ 12,480
Notes payable – China other \| Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates	0.00%	0.00%
Unpaid Principal Balance	$ 4,898	$ 4,997
Fair Value Measurement Adjustments		0
Original Issue Discount and Proceeds Allocated to Warrants	0	0
Net Carrying Value	$ 4,898	$ 4,997
Auto loans \| Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates	7.00%	7.00%
Unpaid Principal Balance	$ 82	$ 100
Fair Value Measurement Adjustments		0
Original Issue Discount and Proceeds Allocated to Warrants	0	0
Net Carrying Value	$ 82	$ 100
Minimum \| Secured SPA Notes \| Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates	10.00%
Minimum \| Unsecured SPA Notes \| Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates	10.00%
Maximum \| Secured SPA Notes \| Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates	15.00%
Maximum \| Unsecured SPA Notes \| Notes Payable
Debt Outstanding [Abstract]
Contractual Interest Rates	15.00%

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Debt Outstanding

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of long-term debt instruments that have contractual principal amounts and for which the fair value option has been elected.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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