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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Statement [Abstract]        
Revenue $ 47 $ 94
Cost of revenues 95 156
Gross loss (48) (62)
Operating expenses:        
Research and development 1,136 987 2,445 2,445
General and administrative 1,365 3,896 2,786 8,211
Total operating expenses 2,501 4,883 5,231 10,656
Loss from operations (2,501) (4,931) (5,231) (10,718)
Other expense, net:        
Forward sales contract expense (512) (5,847)
Change in fair value of warrant liabilities 136 1 66
Change in fair value of contingent consideration 66 66
Interest (expense) income, net (797) 5 (1,583)
Other expense, net (123) (258)
Total other expense, net (635) (595) (6,099) (1,451)
Loss before income taxes (3,136) (5,526) (11,330) (12,169)
Provision for income taxes (3) (3) (11) (7)
Net loss (3,139) (5,529) (11,341) (12,176)
Series A preferred stock dividend (8) (8) (8) (8)
Net loss attributable to common stockholders $ (3,147) $ (5,537) $ (11,349) $ (12,184)
Net loss per common share - basic $ (0.61) $ (15.34) $ (2.61) $ (33.75)
Net loss per common share - diluted $ (0.61) $ (15.34) $ (2.61) $ (33.75)
Weighted average shares outstanding - basic 5,179 361 4,350 361
Weighted average shares outstanding - diluted 5,179 361 4,350 361