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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT - USD ($)
Common stock
Additional Paid-in Capital
Accumulated Deficit
Total
Balance, beginning of period at Dec. 31, 2020   $ 1,364,000 $ (107,497,000) $ (106,133,000)
Beginning balance (in shares) at Dec. 31, 2020 193,303      
Exercise of options   54,000   $ 54,000
Exercised 71,647     71,647
Modification of convertible debt to remove conversion discount   5,210,000   $ 5,210,000
Exercise of common stock warrants 28      
Share-based compensation   109,000   109,000
Net loss     (28,845,000) (28,845,000)
Balance, end of period at Dec. 31, 2021 $ 0 6,738,000 (136,342,000) $ (129,604,000)
Ending balance (in shares) at Dec. 31, 2021 264,978     264,977
Exercise of options   61,000   $ 61,000
Exercised 33,747      
Net loss     (7,873,000) (7,873,000)
Balance, end of period at Mar. 31, 2022 $ 0 6,861,000 (144,215,000) (137,354,000)
Balance, beginning of period at Dec. 31, 2021 $ 0 6,738,000 (136,342,000) $ (129,604,000)
Beginning balance (in shares) at Dec. 31, 2021 264,978     264,977
Net loss       $ (24,645,000)
Balance, end of period at Sep. 30, 2022 $ 0 7,062,000 (160,987,000) (153,925,000)
Balance, beginning of period at Dec. 31, 2021 $ 0 6,738,000 (136,342,000) $ (129,604,000)
Beginning balance (in shares) at Dec. 31, 2021 264,978     264,977
Exercise of options   94,000   $ 94,000
Exercised 82,879     82,879
Modification of convertible debt to remove conversion discount       $ 5,210,000
Exercise of common stock warrants 69      
Share-based compensation   368,000   368,000
Deemed dividend   2,829,000 (2,829,000) 2,829,000
Net loss     (47,187,000) (47,187,000)
Balance, end of period at Dec. 31, 2022 $ 0 10,028,000 (186,358,000) $ (176,330,000)
Ending balance (in shares) at Dec. 31, 2022 347,926     347,926
Balance, beginning of period at Mar. 31, 2022 $ 0 6,861,000 (144,215,000) $ (137,354,000)
Exercise of options   5,000   5,000
Exercised 9,393      
Net loss     (8,679,000) (8,679,000)
Balance, end of period at Jun. 30, 2022 $ 0 6,936,000 (152,894,000) (145,958,000)
Exercise of options   7,000   7,000
Exercised 12,128      
Net loss     (8,093,000) (8,093,000)
Balance, end of period at Sep. 30, 2022 $ 0 7,062,000 (160,987,000) (153,925,000)
Balance, beginning of period at Dec. 31, 2022 $ 0 10,028,000 (186,358,000) (176,330,000)
Exercise of options   50,000   50,000
Exercised 95,842      
Net loss     (8,268,000) (8,268,000)
Balance, end of period at Mar. 31, 2023 $ 0 11,110,000 (195,585,000) (184,475,000)
Balance, beginning of period at Dec. 31, 2022 $ 0 10,028,000 (186,358,000) $ (176,330,000)
Beginning balance (in shares) at Dec. 31, 2022 347,926     347,926
Net loss       $ (23,529,000)
Balance, end of period at Sep. 30, 2023 $ 2,000 221,351,000 (212,867,000) $ 8,487,000
Ending balance (in shares) at Sep. 30, 2023       26,316,681
Balance, beginning of period at Mar. 31, 2023 0 11,110,000 (195,585,000) $ (184,475,000)
Exercise of options 4,592 16,000   16,000
Net loss     (13,974,000) (13,974,000)
Balance, end of period at Jun. 30, 2023 0 13,217,000 (211,581,000) (198,364,000)
Exercise of options 50,646 29,000   29,000
Net loss     (1,286,000) (1,286,000)
Balance, end of period at Sep. 30, 2023 $ 2,000 $ 221,351,000 $ (212,867,000) $ 8,487,000
Ending balance (in shares) at Sep. 30, 2023       26,316,681