Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited)

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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Common 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      
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