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Segment Information - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]    
Revenue $ 12,870 $ 10,074
Cost of sales excluding depreciation (5,024) (5,056)
Selling, general and administrative (32,992) (34,968)
Engineering (14,405) (22,197)
Net loss available to stockholders (116,272) (61,018)
Reportable Segment    
Segment Reporting Information [Line Items]    
Revenue 12,870 10,074
Cost of sales excluding depreciation (5,024) (5,056)
Selling, general and administrative (32,992) (34,968)
Engineering (14,405) (22,197)
Other segment items (76,721) (8,871)
Net loss available to stockholders $ (116,272) $ (61,018)