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 ($)
shares in Thousands, $ in Thousands
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2022 $ 1 $ 1 $ 686,200 $ (674,468) $ 11,734
Balance, shares at Dec. 31, 2022 96 1,091      
Fair value of vested stock options 507 507
Net loss (227) (227)
Private placement of common stock 6,268 6,268
Private placement of common stock, shares   120      
Initial recognition of fair value of warrant liability (5,831) (5,831)
Issuance of common shares for services 315 315
Issuance of common shares for services, shares   2      
Issuance of common shares in settlement of vendors payable 287 287
Issuance of common shares in settlement of vendors payable, shares   16      
Balance at Mar. 31, 2023 $ 1 $ 1 687,746 (674,695) 13,053
Balance, shares at Mar. 31, 2023 96 1,229      
Balance at Dec. 31, 2023 $ 1 $ 1 689,539 (682,065) 7,476
Balance, shares at Dec. 31, 2023 96 1,381      
Fair value of vested stock options 102 102
Net loss (2,266) (2,266)
Balance at Mar. 31, 2024 $ 1 $ 1 $ 689,641 $ (684,331) $ 5,312
Balance, shares at Mar. 31, 2024 96 1,381