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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY/(DEFICIT) (UNAUDITED) - USD ($)
Total
Series F Preferred Stock [Member]
Convertible Preferred Stock [Member]
Preferred Stock [Member]
Preferred Stock [Member]
Series F Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Series F Preferred Stock [Member]
Accumulated Deficit [Member]
Treasury Stock [Member]
Balance at Dec. 31, 2022 $ 6,445,000         $ 2,000 $ 473,628,000   $ (467,185,000)  
Balance (in shares) at Dec. 31, 2022     1,952     2,240,092        
Stock-based compensation 140,000           140,000      
Issue and sale of stock, net 895,000 $ 1,000         895,000 $ 1,000    
Issue and sale of share         1 168,164        
Net loss (4,805,000)               (4,805,000)  
Balance at Mar. 31, 2023 2,676,000         $ 2,000 474,664,000   (471,990,000)  
Balance (in shares) at Mar. 31, 2023     1,952 1   2,408,256        
Balance at Dec. 31, 2022 6,445,000         $ 2,000 473,628,000   (467,185,000)  
Balance (in shares) at Dec. 31, 2022     1,952     2,240,092        
Balance at Dec. 31, 2023 (1,348,000)         $ 5,000 479,274,000   (480,501,000) $ (126,000)
Balance (in shares) at Dec. 31, 2023     1,952     4,522,656       (78,559)
Stock-based compensation 146,000           146,000      
Purchase of treasury stock (374,000)                 $ (374,000)
Purchase of treasury stock (in Shares)                   (179,866)
Net loss (3,261,000)               (3,261,000)  
Balance at Mar. 31, 2024 $ (4,837,000)         $ 5,000 $ 479,420,000   $ (483,762,000) $ (500,000)
Balance (in shares) at Mar. 31, 2024     1,952     4,522,656       (258,425)