Related Party Transactions - Schedule of Related Party Notes Payable (Details) - Related Party - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Feb. 29, 2024	Jan. 31, 2024	Nov. 30, 2023
Related Party Transaction [Line Items]
Net Carrying Value	$ 5,476	$ 8,064
Related party notes payable, current	2,940	5,310
Related party notes payable, long-term	$ 2,536	$ 2,754
2025 March Unsecured SPA Notes
Related Party Transaction [Line Items]
Contractual Interest Rates	10.00%
Net Carrying Value	$ 1,272
2023 Unsecured Convertible Note
Related Party Transaction [Line Items]
Contractual Interest Rates		4.27%
Net Carrying Value		$ 1,364
Notes Payable — China
Related Party Transaction [Line Items]
Contractual Interest Rates	18.00%	18.00%
Net Carrying Value	$ 3,708	$ 4,382
Notes Payable on Demand — China
Related Party Transaction [Line Items]
Contractual Interest Rates	0.00%	0.00%
Net Carrying Value	$ 421	$ 417
FFGP Note
Related Party Transaction [Line Items]
Contractual Interest Rates		4.27%
Net Carrying Value	0	$ 1,576		$ 1,600	$ 1,600
Convertible FFGP Note
Related Party Transaction [Line Items]
Contractual Interest Rates		4.27%	4.27%
Net Carrying Value	$ 0	$ 250	$ 300
Other Notes
Related Party Transaction [Line Items]
Contractual Interest Rates	12.00%	12.00%
Net Carrying Value	$ 75	$ 75