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Consolidated Balance Sheets (Parentheticals) - $ / shares
Dec. 31, 2022
Dec. 31, 2021
Consolidated Balance Sheets    
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 300,000,000 300,000,000
Common stock, shares issued 78,851,516 76,930,096
Common stock, shares outstanding 78,851,516 76,930,096