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Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2020 $ 52,252 $ (35,335) $ 16,917
Balance, shares at Dec. 31, 2020 728,485      
Fair value of warrants issued:        
Stock-based compensation expense   2,658   2,658
Net loss (20,288) (20,288)
In business combination   172   172
For purchase of assets   136   136
Issuance of Common Stock:        
In follow-on public offering, net of issuance costs   25,362   25,362
In follow-on public offering, net of issuance costs, shares 184,000      
To consultants for services   20   20
To consultants for services, shares 107      
Exercise of stock options   330   $ 330
Exercise of stock options, shares 8,000     8,000 [1]
To consultants for services   232   $ 232
Balance at Dec. 31, 2021 81,162 (55,623) 25,539
Balance, shares at Dec. 31, 2021 920,592      
Fair value of warrants issued:        
To consultants for services 222 222
Stock-based compensation expense 609 609
Net loss (5,331) (5,331)
Balance at Mar. 31, 2022 81,993 (60,954) 21,039
Balance, shares at Mar. 31, 2022 920,592      
Balance at Dec. 31, 2021 81,162 (55,623) 25,539
Balance, shares at Dec. 31, 2021 920,592      
Fair value of warrants issued:        
Net loss       (17,756)
Balance at Sep. 30, 2022 83,235 (73,380) 9,855
Balance, shares at Sep. 30, 2022 920,592      
Balance at Dec. 31, 2021 81,162 (55,623) 25,539
Balance, shares at Dec. 31, 2021 920,592      
Fair value of warrants issued:        
Stock-based compensation expense 2,396 2,396
Net loss (23,845) (23,845)
In business combination
For purchase of assets
Issuance of Common Stock:        
To consultants for services 711 $ 711
Exercise of stock options, shares [1]      
Balance at Dec. 31, 2022 84,269 (79,468) $ 4,801
Balance, shares at Dec. 31, 2022 920,592      
Balance at Mar. 31, 2022 81,993 (60,954) 21,039
Balance, shares at Mar. 31, 2022 920,592      
Fair value of warrants issued:        
To consultants for services 131 131
Stock-based compensation expense 661 661
Net loss (6,992) (6,992)
Balance at Jun. 30, 2022 82,785 (67,946) 14,839
Balance, shares at Jun. 30, 2022 920,592      
Fair value of warrants issued:        
To consultants for services 100 100
Stock-based compensation expense 350 350
Net loss (5,434) (5,434)
In business combination
For purchase of assets
For purchase of assets, shares      
Balance at Sep. 30, 2022 83,235 (73,380) 9,855
Balance, shares at Sep. 30, 2022 920,592      
Balance at Dec. 31, 2022 84,269 (79,468) 4,801
Balance, shares at Dec. 31, 2022 920,592      
Fair value of warrants issued:        
To consultants for services 625 625
Stock-based compensation expense 306 306
Net loss (1,703) (1,703)
For purchase of assets 116 116
For purchase of assets, shares 10,000      
Issuance of Common Stock:        
In follow-on public offering, net of issuance costs
In follow-on public offering, net of issuance costs, shares 80,000      
Upon exercise of warrants 2,848 2,848
Upon exercise of warrants, shares 186,666      
Balance at Mar. 31, 2023 88,164 (81,171) 6,993
Balance, shares at Mar. 31, 2023 1,197,258      
Balance at Dec. 31, 2022 84,269 (79,468) 4,801
Balance, shares at Dec. 31, 2022 920,592      
Fair value of warrants issued:        
Net loss       (9,324)
Balance at Sep. 30, 2023 88,838 (88,792) 46
Balance, shares at Sep. 30, 2023 1,197,258      
Balance at Mar. 31, 2023 88,164 (81,171) 6,993
Balance, shares at Mar. 31, 2023 1,197,258      
Fair value of warrants issued:        
To consultants for services 182 182
Stock-based compensation expense 459 459
Net loss (5,528) (5,528)
Balance at Jun. 30, 2023 88,805 (86,699) 2,106
Balance, shares at Jun. 30, 2023 1,197,258      
Fair value of warrants issued:        
To consultants for services (156) (156)
Stock-based compensation expense 189 189
Net loss (2,093) (2,093)
Balance at Sep. 30, 2023 $ 88,838 $ (88,792) $ 46
Balance, shares at Sep. 30, 2023 1,197,258      
[1] On the respective exercise dates as of December 31, 2021, the aggregate intrinsic value of shares of Common Stock issued upon exercise of stock options amounted to $0.6 million.