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BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2023
Dec. 31, 2022
Stockholders' equity (deficit):    
Treasury stock, shares 78,559  
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 1,952 1,952
Preferred stock, shares outstanding (in shares) 1,952 1,952
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 4,522,656 2,240,092
Common stock, shares outstanding (in shares) 4,522,656 2,240,092