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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2022
Dec. 31, 2021
Stockholders' equity:    
Common stock, shares authorized 100,000,000 100,000,000
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares issued 16,344,815 16,273,913
Common stock, shares outstanding 16,344,815 16,273,913