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Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($)
Preferred Stock [Member]
Common Stock [Member]
Treasury Stock, Common [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2022 0 208,018 189      
Balance at Dec. 31, 2022 $ 0 $ 0 $ (181,000) $ 227,645,000 $ (223,847,000) $ 3,617,000
Net loss 0 0 0 0 (1,219,000) (1,219,000)
Stock-based compensation $ 0 $ 0 $ 0 31,000 0 31,000
Balance (in shares) at Mar. 31, 2023 6,550 208,018 189      
Balance at Mar. 31, 2023 $ 0 $ 0 $ (181,000) 229,149,000 (225,066,000) 3,902,000
Issuance, preferred (in shares) 6,550 0 0      
Proceeds from private placement, net of fees and amounts held in escrow $ 0 $ 0 $ 0 1,473,000 0 1,473,000
Balance (in shares) at Dec. 31, 2022 0 208,018 189      
Balance at Dec. 31, 2022 $ 0 $ 0 $ (181,000) 227,645,000 (223,847,000) 3,617,000
Net loss           $ (3,163,000)
Issuances related to stock compensation (in shares)   4,491        
Issuances related to warrant exercises (in shares)           8,516
Balance (in shares) at Sep. 30, 2023 5,146 263,667 189      
Balance at Sep. 30, 2023 $ 0 $ 0 $ (181,000) 233,852,000 (227,010,000) $ 6,661,000
Balance (in shares) at Dec. 31, 2022 0 208,018 189      
Balance at Dec. 31, 2022 $ 0 $ 0 $ (181,000) 227,645,000 (223,847,000) 3,617,000
Issuances related to stock compensation (in shares)   4,491,000        
Issuances from Preferred Stock conversions (in shares)   352,624,000        
Issuances related to warrant exercises (in shares)   18,681,000        
Balance (in shares) at Dec. 31, 2023 1,930 573,644 189      
Balance at Dec. 31, 2023 $ 0 $ 0 $ (181,000) 233,913,000 (228,231,000) 5,501,000
Foundry exchange (in shares)   10,170,000        
Balance (in shares) at Mar. 31, 2023 6,550 208,018 189      
Balance at Mar. 31, 2023 $ 0 $ 0 $ (181,000) 229,149,000 (225,066,000) 3,902,000
Net loss $ 0 $ 0 $ 0 0 (1,049,000) (1,049,000)
Issuances related to stock compensation (in shares) 0 4,491 0      
Stock-based compensation $ 0 $ 0 $ 0 411,000 0 411,000
Issuances from Preferred Stock conversions (in shares) (175) 3,669 0      
Series F Preferred Stock conversions $ 0 $ 0 $ 0 4,000 0 4,000
Series F Preferred Stock dividends $ 0 $ 0 $ 0 (149,000) 0 (149,000)
Issuances related to warrant exercises (in shares) 0 8,516 0      
Preferred warrant exercise, net of fees $ 0 $ 0 $ 0 534,000 0 534,000
Balance (in shares) at Jun. 30, 2023 6,375 224,694 189      
Balance at Jun. 30, 2023 $ 0 $ 0 $ (181,000) 233,911,000 (226,115,000) 7,615,000
Release of escrow from March 31, 2023 private placement 0 0 0 4,000,000 0 4,000,000
Fees associated with Series F Preferred Stock issuance 0 0 0 (38,000) 0 (38,000)
Net loss 0 0 0 0 (895,000) (895,000)
Stock-based compensation $ 0 $ 0 $ 0 31,000 0 31,000
Issuances from Preferred Stock conversions (in shares) (1,229) 49,143 0      
Series F Preferred Stock conversions $ 0 $ 0 $ 0 43,000 0 43,000
Series F Preferred Stock dividends $ 0 $ 0 $ 0 (133,000) 0 (133,000)
Balance (in shares) at Sep. 30, 2023 5,146 263,667 189      
Balance at Sep. 30, 2023 $ 0 $ 0 $ (181,000) 233,852,000 (227,010,000) 6,661,000
Foundry exchange (in shares) 0 (10,170) 0      
Balance (in shares) at Dec. 31, 2023 1,930 573,644 189      
Balance at Dec. 31, 2023 $ 0 $ 0 $ (181,000) 233,913,000 (228,231,000) 5,501,000
Net loss $ 0 $ 0 $ 0 0 (1,136,000) (1,136,000)
Issuances related to stock compensation (in shares) 0 0 0      
Stock-based compensation $ 0 $ 0 $ 0 31,000 0 31,000
Issuances from Preferred Stock conversions (in shares) (922) 90,056 0      
Series F Preferred Stock conversions $ 0 $ 0 $ 0 82,000 0 82,000
Series F Preferred Stock dividends $ 0 $ 0 $ 0 (44,000) 0 (44,000)
Balance (in shares) at Mar. 31, 2024 1,008 663,700 189      
Balance at Mar. 31, 2024 $ 0 $ 0 $ (181,000) 233,982,000 (229,367,000) 4,434,000
Balance (in shares) at Dec. 31, 2023 1,930 573,644 189      
Balance at Dec. 31, 2023 $ 0 $ 0 $ (181,000) 233,913,000 (228,231,000) 5,501,000
Net loss           (3,159,000)
Issuances from Preferred Stock conversions (in shares)   288,968,000        
Balance (in shares) at Sep. 30, 2024 545 1,071,545 189      
Balance at Sep. 30, 2024 $ 0 $ 0 $ (181,000) 236,242,000 (231,390,000) 4,671,000
Balance (in shares) at Mar. 31, 2024 1,008 663,700 189      
Balance at Mar. 31, 2024 $ 0 $ 0 $ (181,000) 233,982,000 (229,367,000) 4,434,000
Net loss 0 0 0 0 (983,000) (983,000)
Stock-based compensation $ 0 $ 0 $ 0 31,000 0 31,000
Issuances from Preferred Stock conversions (in shares) (2,111) 198,912 0      
Series F Preferred Stock conversions $ 0 $ 0 $ 0 112,000 0 112,000
Series F Preferred Stock dividends $ 0 $ 0 $ 0 (20,000) 0 (20,000)
Issuances related to warrant exercises (in shares) 1,648          
Preferred warrant exercise, net of fees       1,478,000   1,478,000
Balance (in shares) at Jun. 30, 2024 545 862,612 189      
Balance at Jun. 30, 2024 $ 0 $ 0 $ (181,000) 235,583,000 (230,350,000) 5,052,000
Net loss 0 0 0 0 (1,040,000) (1,040,000)
Series F Preferred Stock dividends $ 0 $ 0 $ 0 (12,000) 0 (12,000)
Issuances related to warrant exercises (in shares)   208,933        
Preferred warrant exercise, net of fees       671,000   671,000
Balance (in shares) at Sep. 30, 2024 545 1,071,545 189      
Balance at Sep. 30, 2024 $ 0 $ 0 $ (181,000) $ 236,242,000 $ (231,390,000) $ 4,671,000