Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity (Unaudited)

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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
Preferred Stock [Member]
Series A Preferred Offerings [Member]
Preferred Stock [Member]
Series A A Preferred Stock [Member]
Preferred Stock [Member]
Series AAA and AAA-2 Preferred Stock Exchanges [Member]
Preferred Stock [Member]
Common Stock [Member]
Series A Preferred Offerings [Member]
Common Stock [Member]
Series A A Preferred Stock [Member]
Common Stock [Member]
Series AAA and AAA-2 Preferred Stock Exchanges [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Total stockholders’ equity       $ 0       $ 47,000 $ 229,900,000 $ (210,743,000)  
Balance (in shares) at Dec. 31, 2022       10,323       1,880,298      
Issuance of Series A preferred stock at $1,000 per share (in shares)       2,299              
Conversion of Series A preferred stock (in shares) 0 0 0   0 0          
Balance (in shares) at Mar. 31, 2023       12,622       1,889,753      
Balance at Dec. 31, 2022       $ 0       $ 47,000 229,900,000 (210,743,000)  
Issuance of Series A preferred stock at $1,000 per share       0         1,919,000    
Conversion of Series A preferred stock $ 0 $ 0 $ 0         0      
Balance at Mar. 31, 2023       $ 0       $ 47,000 232,539,000 (217,979,000) $ 14,607,000
Stock-based compensation (in shares)               9,455      
Issuance of common stock in settlement of legal matter (in shares)               0      
Preferred stock dividends paid – common stock (in shares)               0      
Stock-based compensation               $ 0 720,000    
Issuance of common stock in settlement of legal matter               $ 0 0    
Preferred stock dividends paid – common stock                 0 0  
Net Loss                   (7,236,000) (7,236,000)
Balance (in shares) at Dec. 31, 2022       10,323       1,880,298      
Balance (in shares) at Dec. 31, 2023       23,656       4,774,116      
Balance at Dec. 31, 2022       $ 0       $ 47,000 229,900,000 (210,743,000)  
Balance at Dec. 31, 2023       0       81,000 258,923,000 (249,014,000) 9,990,000
Total stockholders’ equity       0       47,000 232,539,000 (217,979,000) 14,607,000
Total stockholders’ equity       $ 0       $ 81,000 258,923,000 (249,014,000) 9,990,000
Issuance of Series A preferred stock at $1,000 per share (in shares)       0              
Conversion of Series A preferred stock (in shares) (475) (263) (840)   45,587 139,452 501,803        
Balance (in shares) at Mar. 31, 2024       22,078       5,982,912      
Issuance of Series A preferred stock at $1,000 per share       $ 0         0    
Conversion of Series A preferred stock $ 0 $ 0 $ 0         $ 1,000      
Balance at Mar. 31, 2024       0       $ 83,000 260,183,000 (254,278,000) 5,988,000
Stock-based compensation (in shares)               19,788      
Issuance of common stock in settlement of legal matter (in shares)               500,000      
Preferred stock dividends paid – common stock (in shares)               2,166      
Stock-based compensation               $ 0 332,000    
Issuance of common stock in settlement of legal matter               1,000 924,000    
Preferred stock dividends paid – common stock                 4,000 (4,000)  
Net Loss                   (5,260,000) (5,260,000)
Total stockholders’ equity       $ 0       $ 83,000 $ 260,183,000 $ (254,278,000) $ 5,988,000