Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited)

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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Preferred Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Beginning balance, value at Dec. 31, 2021 $ 10 $ 381,183 $ (376,055) $ 5,138
Beginning balance, shares at Dec. 31, 2021 9,914        
Net loss (2,540) (2,540)
Issuance of common stock, net $ 1   5,029 5,030
Issuance of common stock, net, shares 1,151        
Issuance of common stock upon exercises of warrants $ 1   1
Issuance of common stock upon exercises of warrants, shares 974        
Amortization of restricted stock   27 27
Stock-based compensation   226 226
Ending balance, value at Mar. 31, 2022 $ 12 386,465 (378,595) 7,882
Ending balance, shares at Mar. 31, 2022 12,039        
Net loss (2,462) (2,462)
Issuance of common stock upon exercises of warrants $ 3     3
Issuance of common stock upon exercises of warrants, shares 2,590        
Amortization of restricted stock     27   27
Stock-based compensation   217 217
Ending balance, value at Jun. 30, 2022 $ 15 386,709 (381,057) 5,667
Ending balance, shares at Jun. 30, 2022 14,629        
Net loss (2,638) (2,638)
Amortization of restricted stock     18   18
Stock-based compensation     503   503
Ending balance, value at Sep. 30, 2022 $ 15 387,230 (383,695) 3,550
Ending balance, shares at Sep. 30, 2022 14,629        
Beginning balance, value at Dec. 31, 2022 $ 15 387,609 (386,261) 1,363
Beginning balance, shares at Dec. 31, 2022 15,016      
Net loss (1,675) (1,675)
Ending balance, value at Mar. 31, 2023 $ 15 387,609 (387,936) (312)
Ending balance, shares at Mar. 31, 2023 15,016      
Net loss   (1,586) (1,586)
Stock-based compensation 864 864
Ending balance, value at Jun. 30, 2023 $ 15   388,473 (389,522) (1,034)
Ending balance, shares at Jun. 30, 2023 15,016      
Net loss (338) (338)
Stock-based compensation 411 411
Issuance of preferred stock, net   1 9,093   9,094
Ending balance, value at Sep. 30, 2023 $ 15 $ 1 $ 397,977 $ (389,860) $ 8,133
Ending balance, shares at Sep. 30, 2023 15,016 950