Quarterly report [Sections 13 or 15(d)]

Condensed Statements of Stockholders' Equity (Deficit) and Mezzanine Equity (Unaudited)

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Condensed Statements of Stockholders' Equity (Deficit) and Mezzanine Equity (Unaudited) - USD ($)
Preferred Stock [Member]
Series C Preferred Stock [Member]
Preferred Stock [Member]
Series L Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Mezzanine Equity [Member]
Series L Preferred Stock [Member]
Balance at Dec. 31, 2023 $ 1,000   $ 1,000 $ 689,539,000 $ (682,065,000) $ 7,476,000  
Balance, shares at Dec. 31, 2023 96,230   1,380,653        
Mezzanine equity balance, shares at Dec. 31, 2023            
Mezzanine equity balance at Dec. 31, 2023            
Fair value of vested stock options   222,000 222,000  
Net loss   (9,387,000) (9,387,000)  
Issuance of common stock and warrants for cash, net   1,000 2,975,000 2,976,000  
Cancellation of common stock previously issued to prior CFO    
Issuance of common stock in settlement of vendor payable   810,000 810,000  
Issuance of common stock and warrants for cash, net, shares     740,000        
Cancellation of common stock previously issued to prior CFO, shares     (13,902)        
Issuance of common stock in settlement of vendor payable, shares     127,597        
Balance at Sep. 30, 2024 $ 1,000   $ 2,000 693,546,000 (691,452,000) 2,097,000  
Balance, shares at Sep. 30, 2024 96,230   2,234,348        
Mezzanine equity balance, shares at Sep. 30, 2024            
Mezzanine equity balance at Sep. 30, 2024            
Balance at Jun. 30, 2024 $ 1,000   $ 2,000 693,546,000 (688,041,000) 5,508,000  
Balance, shares at Jun. 30, 2024 96,230   2,234,348        
Mezzanine equity balance, shares at Jun. 30, 2024            
Mezzanine equity balance at Jun. 30, 2024            
Fair value of vested stock options    
Net loss   (3,411,000) (3,411,000)  
Issuance of common stock and warrants for cash, net    
Cancellation of common stock previously issued to prior CFO    
Issuance of common stock in settlement of vendor payable    
Balance at Sep. 30, 2024 $ 1,000   $ 2,000 693,546,000 (691,452,000) 2,097,000  
Balance, shares at Sep. 30, 2024 96,230   2,234,348        
Mezzanine equity balance, shares at Sep. 30, 2024            
Mezzanine equity balance at Sep. 30, 2024            
Balance at Dec. 31, 2024 $ 1,000 $ 2,000 693,554,000 (695,227,000) (1,670,000)  
Balance, shares at Dec. 31, 2024 96,230 2,234,328        
Mezzanine equity balance, shares at Dec. 31, 2024            
Mezzanine equity balance at Dec. 31, 2024            
Series L convertible preferred stock and warrants issued for cash, net 6,503,000 6,503,000  
Series L convertible preferred stock and warrants issued for cash, net, shares   7,833          
Conversion of Series L convertible preferred stock into common stock $ 3,000 (3,000)  
Conversion of Series L convertible preferred stock into common stock, shares   (2,921) 2,930,450        
Dividend on Series L convertible preferred stock (229,000) (229,000)  
Fair value of vested stock options 386,000 386,000  
Net loss (5,323,000) (5,323,000)  
Exercise of warrants for cash and inducement warrants, net $ 1,000 1,051,000 1,052,000  
Exercise of warrants for cash and inducement warrants, net, shares     537,069        
Issuance of prefunded warrants in settlement of vendor payable 847,000 847,000  
Issuance and exercise of prefunded warrants for ELOC fee 672,000 672,000  
Issuance and exercise of prefunded warrants for ELOC fee, shares     300,000        
Issuance of common stock and warrants for services 718,000 718,000  
Issuance of common stock and warrants for services, shares     50,000        
Issuance of warrants for VRT waiver 44,000 44,000  
Balance at Sep. 30, 2025 $ 1,000 $ 6,000 703,772,000 (700,779,000) 3,000,000  
Balance, shares at Sep. 30, 2025 96,230 4,912 6,051,847        
Mezzanine equity balance, shares at Sep. 30, 2025            
Mezzanine equity balance at Sep. 30, 2025            
Balance at Jun. 30, 2025 $ 1,000 $ 3,000 700,378,000 (697,521,000) 2,861,000  
Balance, shares at Jun. 30, 2025 96,230 3,272,995        
Mezzanine equity balance, shares at Jun. 30, 2025             6,301
Mezzanine equity balance at Jun. 30, 2025             $ 1,956,000
Mezzanine equity reclassification 1,956,000 1,956,000 $ (1,956,000)
Mezzanine equity reclassification, shares   6,301         (6,301)
Series L convertible preferred stock and warrants issued for cash, net 1,062,000 1,062,000  
Series L convertible preferred stock and warrants issued for cash, net, shares   1,222          
Conversion of Series L convertible preferred stock into common stock $ 3,000 (3,000)  
Conversion of Series L convertible preferred stock into common stock, shares   (2,611) 2,778,852        
Dividend on Series L convertible preferred stock (144,000) (144,000)  
Fair value of vested stock options 379,000 379,000  
Net loss (3,114,000) (3,114,000)  
Balance at Sep. 30, 2025 $ 1,000 $ 6,000 $ 703,772,000 $ (700,779,000) $ 3,000,000  
Balance, shares at Sep. 30, 2025 96,230 4,912 6,051,847        
Mezzanine equity balance, shares at Sep. 30, 2025            
Mezzanine equity balance at Sep. 30, 2025