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Consolidated Balance Sheets (Parentheticals) - $ / shares
Jun. 30, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized 33,333,333 33,333,333
Common stock, shares issued 8,133,095 7,866,799
Number of common shares of the combined company owned by Cend stockholders 8,132,357 7,866,061
Treasury stock (shares) 738 738